Concrete structure steel bar embedded connector device and using method thereof

Abstract

The invention discloses a concrete structure steel bar pre-embedded connector device and a using method thereof.The concrete structure steel bar pre-embedded connector device comprises a plurality of splicing units, four concave-convex mortise and tenon notches are formed in the two sides of each splicing unit, and the adjacent splicing units are spliced in a butt joint mode through the mortise and tenon notches to form a device body with the length matched with the construction requirement; the device body is made of synthetic polymer plastic materials, detachable reserved connector notches are formed in the upper portion and the lower portion of the device body, bolt holes are formed in the notches, the notches are fixed and disassembled through bolts, rapid assembly and flexible disassembly and assembly are achieved, and the material turnover rate is increased. According to the invention, a synthetic polymer plastic material is used as a carrier, and the carrier is shaped, is provided with a height adjusting device, and can adapt to structures with different section heights. The material has the characteristics of light weight, high strength, good sealing performance, wide applicability, high turnover rate and the like. After the structural slab steel bars are installed, the structural slab steel bars can also serve as side formworks of the structural slab, connector hole sites are reserved in the surfaces, and the embedded connectors can be directly placed in the connector hole sites after the connector hole sites are fixed.

Description

Technical Field

[0001] This invention belongs to the field of concrete structure technology, specifically relating to a novel pre-embedded rebar connector device for concrete structures and its usage method. It is applicable to the pre-embedded construction of pre-reserved rebar connectors in structures, and is especially suitable for concrete structure construction scenarios that require flexible adaptation to different cross-sectional heights and length requirements. Background Technology

[0002] The elevation, direction, and spacing of the pre-embedded steel rebar connectors in concrete structures are a key challenge in the implementation process. Often, quality defects in the pre-embedded connectors can cause inconvenience and potential quality problems in subsequent construction.

[0003] In existing technologies, such as the pre-embedded rebar connector fixing device disclosed in patent (CN210659265U), although it can achieve initial fixing of the connector, it has obvious defects: its splicing unit is only connected by simple tenon and mortise, which is not flexible enough and cannot be quickly adjusted according to the construction length requirements; it has no height adjustment function and cannot adapt to structures with different cross-sectional heights; the connector positioning relies solely on the snap-fit ​​structure, which is prone to orientation and displacement problems, and the device has a single function and cannot be used as a side formwork, increasing construction costs and procedures. The snap-fit ​​rebar connector disclosed in patent (CN220225944U) mainly focuses on the convenience of rebar connection, reducing the use of bolts through snap-fit ​​components, but it does not address the positioning, height adjustment, and splicing adaptation issues in the pre-embedding stage, and cannot solve quality defects such as elevation errors, inconsistent directions, and uneven spacing during the pre-embedding process. Moreover, its complex structure is not suitable for large-scale pre-embedding construction.

[0004] Therefore, there is an urgent need for a new type of pre-embedded connector device and method that features flexible splicing, adjustable height, precise positioning, and integrated functions. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned defects of the prior art and provide a new type of pre-embedded connector for reinforced concrete structures and its usage method, so as to solve the technical problems of insufficient splicing flexibility, lack of height adjustment function, unstable positioning, single function, and low construction efficiency in the prior art.

[0006] To achieve the above objectives, the technical solution of the present invention is: a pre-embedded connector device for reinforced concrete structures, comprising several splicing units, each splicing unit having four concave-convex tenon and mortise slots on both sides, adjacent splicing units being assembled by connecting the tenon and mortise slots to form a device body of a length adapted to construction requirements; the device body is made of synthetic polymer plastic material, and the upper and lower parts of the device body are provided with detachable pre-reserved connector slots, with bolt holes opened in the slots, and the slots are fixed and disassembled by bolts, realizing rapid assembly and flexible disassembly, and improving material turnover rate.

[0007] Furthermore, the main body of the device is provided with two rows of tracks, one above the other, and a height adjustment rod is provided between the two tracks. A pulley is installed at the bottom of the height adjustment rod, and the pulley slides in cooperation with the track. The height adjustment rod is moved along the track by the pulley, so as to realize the flexible adjustment of the height of the device.

[0008] Furthermore, a pulley limiting device is installed inside the track. A spring is installed at the bottom of the limiting device, and a limiting rod is connected to the upper end of the spring. The limiting rod is made of high-polymer plastic. Automatic V-locks are set on both sides of the limiting rod. Pulleys that can rotate freely are set on both sides of the V-locks. Rods are fixed on the pulleys. The opening and closing state of the V-locks is controlled by the rotation of the pulleys, so as to achieve reliable locking after height adjustment.

[0009] Furthermore, the limiting rod has the control function of pressing to retract and pressing again to pop up. By pressing, the limiting rod is controlled to retract to adjust the position of the height adjustment rod, and the pop-up state realizes the limit fixation, thereby realizing convenient operation of height adjustment.

[0010] Furthermore, the height adjustment range of the height adjustment rod is 5cm to 30cm, enhancing the adaptability of the lifting device to different construction scenarios.

[0011] Furthermore, the detachable pre-reserved connector slot can be adjusted to assemble steel bar connectors of different specifications. Each small slot unit is connected by a mortise and tenon structure to achieve multi-specification connector adaptation and stable splicing of slot units.

[0012] Furthermore, the inner ring of the reserved connector hole on each splicing unit is provided with an internal thread, and the reserved connector hole is equipped with a limiting position device. The limiting position device and the reserved connector hole are screwed together by the thread to achieve precise positioning and fixation of the connector.

[0013] Furthermore, the main body of the device can also serve as the side formwork of the structural slab after the steel reinforcement of the structural slab is installed, thereby achieving functional integration and reducing construction costs and process complexity.

[0014] Furthermore, the synthetic polymer plastic material has the characteristics of being lightweight, high-strength, and having good sealing properties, which improves the ease of construction and the quality of pre-embedded construction.

[0015] A method for using the above-mentioned pre-embedded rebar connector device for concrete structures includes the following steps: S1: Assemble and connect several splicing units by connecting them through the tenon and mortise slots on both sides of the splicing unit to assemble the main body of the device of the required length; S2: Adjust the height by pressing the limiting rod to retract it, and then sliding the height adjusting rod along the track to the required height by the pulley. Press the limiting rod again to make it pop up, and the V-lock will automatically lock to achieve fixation; S3: Install the pre-embedded rebar connector by fixing the detachable pre-reserved connector slot with bolts. Assemble the rebar connectors of the corresponding specifications and spacing in the slot according to the project requirements. After placing the connector into the pre-reserved connector hole, screw the limiting device into the pre-reserved connector hole to achieve connector positioning.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Flexible and efficient splicing: The splicing units can be quickly connected through mortise and tenon joints. The length of the device can be flexibly adjusted according to construction needs, solving the problems of cumbersome splicing and poor adaptability of existing technologies, and improving the efficiency of construction preparation.

[0017] 2. Precise height adjustment: A height adjustment mechanism with a range of 5cm to 30cm is set up, which, together with a V-lock limit device, can be used to adapt to different cross-sectional height structures. The positioning is stable after adjustment, which solves the problem that existing technologies do not have height adjustment function or are prone to displacement after adjustment.

[0018] 3. Reliable connector positioning: The pre-drilled connector hole is equipped with threads and matching positioning devices to ensure that the connector orientation does not shift or move, thus solving the problems of low pre-embedding accuracy and potential quality issues in subsequent construction.

[0019] 4. Strong functional integration: The main body of the device can also serve as the side formwork of the structural plate, reducing additional construction procedures and material input, and solving the problems of single function and high construction cost of existing technologies.

[0020] 5. Excellent material performance: Made of synthetic polymer plastics, it has the characteristics of light weight, high strength, good sealing and high turnover rate, which reduces the labor intensity of construction, improves the material reuse rate and reduces waste.

[0021] In summary, this invention provides a highly efficient pre-embedded connector device and construction method for concrete structures. The device uses synthetic polymer plastic as a carrier, and features lightweight, high strength, good sealing, wide applicability, and high turnover rate. After installation, the pre-embedded connector can be directly placed into the pre-drilled holes on its surface, offering advantages such as simple installation, high construction efficiency, high construction quality, and low cost. It solves the problems of misalignment, angular deviation, and uneven spacing of pre-embedded connectors currently encountered in construction, resulting in significant socio-economic benefits. Attached Figure Description

[0022] Figure 1 This is a process flow diagram of the present invention; Figure 2 This is a schematic diagram of the pre-embedded connector device of the present invention, wherein (a) is the height adjustment device in the open state and (b) is the height adjustment device in the closed state; Figure 3 A cross-sectional view of the pre-embedded connector device of the invention, wherein (a) is the height adjustment device in the open state and (b) is the height adjustment device in the closed state; Figure 4 is a side view of the pre-embedded connector device of the present invention; Figure 5 is a schematic diagram of the height limiting device of the present invention; Explanation of reference numerals in the attached drawings: 1-Removable pre-drilled connector slot; 2-Tenon and tenon joint; 3-Connector pre-drilled hole (with internal thread); 4-Height adjustment rod; 5-Pulley; 6-Rail; 7-Height limit device; 8-M14 bolt hole; 9-Connector limit device; 10-Limit rod; 11-V-lock. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] As shown in Figure 1 to Figure 5 As shown, this invention discloses a novel pre-embedded rebar connector device for concrete structures, comprising several splicing units. Each splicing unit has four mortise and tenon joints machined on both sides. Adjacent splicing units are tightly joined through these joints. The number of splicing units can be flexibly increased or decreased according to the length requirements of the construction site, allowing for rapid assembly into the required device body. The device body is injection molded from a synthetic polymer plastic material. This material is lightweight and easy to handle, has high strength to withstand construction loads, and provides good sealing to prevent grout leakage during concrete pouring.

[0025] Two parallel rows of tracks 6 are arranged in the middle of the main body of the device. A height adjustment rod 4 is slidably installed within the tracks 6. A pulley 5 is mounted on the bottom of the height adjustment rod 4 via a bearing. The pulley 5 fits snugly against the inner wall of the track 6, ensuring smooth movement of the height adjustment rod 4. A pulley limiting device 7 is fixedly installed inside the track 6. A spring is welded to the bottom of the limiting device 7, and a limiting rod 10 is glued to the upper end of the spring. The limiting rod 10 is made of high-polymer plastic, and its two sides are connected to automatically locking V-locks 11 via rotating shafts. Fixed rods are welded to the pulleys on both sides of the V-lock 11. Rotating the pulleys controls the opening and closing of the V-lock 11. The limiting rod 10 is designed to retract upon pressing and spring back upon pressing again. When the operator presses the limiting rod 10 to retract it, the height adjustment rod 4 slides along the track 6. After adjusting to the desired height within the range of 5cm to 30cm, pressing the limiting rod 10 again springs it back up, and the V-lock 11 automatically locks, achieving stable positioning of the height adjustment rod 4.

[0026] The main body of the device has detachable pre-drilled connector slots 1 machined using molds at the top and bottom. M14 bolt holes 8 are provided on the edge of slot 1. During construction, slot 1 is fixed to the main body using M14 bolts. Disassembly is then performed simply by unscrewing the bolts, enabling quick assembly and disassembly of slot 1. The interior of slot 1 consists of several small units connected by mortise and tenon joints. The combination of these units can be adjusted according to engineering design requirements to accommodate rebar connectors of different specifications and spacings. The inner ring of the connector pre-drilled hole 3 on each splicing unit is machined with internal threads. After the connector is inserted into the pre-drilled hole 3, the connector limiting device 9 is screwed into the pre-drilled hole 3 until it fits tightly against the connector end face, fixing the connector's orientation and position and preventing displacement during pouring.

[0027] The present invention provides a method for using a pre-embedded connector device for reinforced concrete structures, comprising the following steps: S1: Assembly and Connection Each single piece of the device has four mortise and tenon joints on each side. Adjacent pieces are connected by mortise and tenon joints, and can be spliced ​​to the required length according to construction requirements.

[0028] S2: Height Adjustment This device features a built-in height adjustment system. Two rows of tracks are positioned at the center, with a height adjustment rod containing pulleys at the bottom between them. Each track houses a pulley limiter, with a spring at its base and a limiter rod connected to the upper end of the spring. The limiter rod is also made of high-polymer plastic and has automatically locking V-locks on both sides. Each V-lock has freely rotating pulleys on either side, with fixed rods on the pulleys. The rotation of the pulleys controls the opening and closing of the V-locks. Pressing the limiter rod retracts it; pressing down retracts it, and pressing again releases it. During use, the height can be adjusted to the desired level by sliding the height adjustment rod, with an adjustment range of 5cm to 30cm.

[0029] S3: Installation of pre-embedded steel bar connectors The device features detachable pre-drilled connector slots at the top and bottom, which are secured and removed using M14 bolt holes. The slots allow for the assembly of rebar connectors of different specifications and spacings, tailored to project requirements. Each small section is connected via mortise and tenon joints. Each pre-drilled connector hole has a threaded inner ring; after placement, the other end is screwed in to ensure the connector's orientation remains stable.

[0030] This invention relates to a novel pre-embedded connector device for reinforced concrete structures and its usage method. It uses a synthetic polymer plastic material as a carrier, features a standardized design, and includes a height adjustment device to adapt to structures with different cross-sectional heights. This material is lightweight, high-strength, has good sealing properties, wide applicability, and high turnover rate. After the structural slab reinforcement is installed, it can also serve as a side formwork for the structural slab, with pre-drilled holes for connectors on its surface. After fixing, the pre-embedded connector can be directly placed inside.

[0031] This invention can solve the quality defects such as elevation error, inconsistent direction and uneven spacing in the conventional process of pre-embedding connectors. It aims to improve the construction efficiency and quality of pre-embedded connectors and the subsequent construction quality of the structural slab sealing reinforcement connection.

Claims

1. A pre-embedded connector device for reinforcing steel bars in a concrete structure, characterized in that: It consists of several splicing units, each with four mortise and tenon joints on both sides. Adjacent splicing units are joined together through the mortise and tenon joints to form a main body of the device that meets the construction requirements. The main body of the device is made of synthetic polymer plastic material. The upper and lower parts of the main body of the device are provided with detachable pre-reserved connector slots with bolt holes. The slots are fixed and disassembled by bolts, which enables rapid assembly and flexible disassembly, improving the material turnover rate.

2. The concrete structure steel reinforcement pre-embedded connector device according to claim 1, characterized in that: The device has two rows of tracks in the middle, with a height adjustment rod between them. A pulley is installed at the bottom of the height adjustment rod, and the pulley slides in conjunction with the track. The height adjustment rod moves along the track by the pulley, thus flexibly adjusting the height of the device.

3. The concrete structure steel reinforcement pre-embedded connector device according to claim 2, characterized in that: The track is equipped with a pulley limiting device. A spring is installed at the bottom of the limiting device, and a limiting rod is connected to the upper end of the spring. The limiting rod is made of high-polymer plastic. Automatic V-locks are set on both sides of the limiting rod. Pulleys that can rotate freely are set on both sides of the V-locks. Rods are fixed on the pulleys. The opening and closing state of the V-locks is controlled by the rotation of the pulleys, so as to achieve reliable locking after height adjustment.

4. The pre-embedded connector device for reinforced concrete structures according to claim 3, characterized in that: The limiting rod has the control function of pressing to retract and pressing again to pop up. By pressing, the limiting rod is controlled to retract to adjust the position of the height adjustment rod, and the pop-up state realizes the limit fixation, thereby realizing convenient operation of height adjustment.

5. The pre-embedded connector device for reinforced concrete structures according to claim 2, characterized in that: The height adjustment range of the height adjustment rod is 5cm to 30cm, and the lifting device is adaptable to different construction scenarios.

6. The pre-embedded connector device for reinforced concrete structures according to claim 1, characterized in that: The detachable pre-reserved connector slot allows for the adjustable assembly of steel bar connectors of different specifications. Each small slot unit is connected by a mortise and tenon structure, enabling the adaptation of multiple connector specifications and the stable splicing of slot units.

7. The concrete structure steel reinforcement pre-embedded connector device according to claim 1, characterized in that: The inner ring of the reserved connector hole on each splicing unit is provided with an internal thread. The reserved connector hole is equipped with a positioning device. The positioning device and the reserved connector hole are screwed together by the thread to achieve precise positioning and fixation of the connector.

8. The pre-embedded connector device for reinforced concrete structures according to claim 1, characterized in that: The main body of the device can also serve as the side formwork of the structural slab after the steel reinforcement of the structural slab is installed, thereby achieving functional integration and reducing construction costs and process complexity.

9. The pre-embedded connector device for reinforced concrete structures according to claim 1, characterized in that: The synthetic polymer plastic material has the characteristics of being lightweight, high-strength, and having good sealing properties, which improves the convenience of construction and the quality of pre-embedded construction.

10. A method of using the pre-embedded connector device for reinforced concrete structures according to any one of claims 1-9, characterized in that: Includes the following steps: S1: Assembly and docking: Connect several splicing units through the tenon and mortise slots on both sides of the splicing unit to assemble the main body of the device of the required length; S2: Height adjustment: Press the limit rod to retract it, and the height adjustment rod will slide along the track to the required height through the pulley. Press the limit rod again to make it pop up, and the V-lock will automatically lock to achieve fixation; S3: Installation of pre-embedded steel bar connectors: Fix the detachable pre-reserved connector slot with bolts. Assemble steel bar connectors of the corresponding specifications and spacing in the slot according to the project requirements. After the connector is placed into the pre-reserved connector hole, the limit positioner is screwed into the pre-reserved connector hole to achieve connector positioning.

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