Auxiliary device for longitudinal main reinforcement bar butt restraint and its usage method

Abstract

This invention discloses a longitudinal main reinforcement bar docking constraint auxiliary device and its usage method. The device includes a constraint sliding rod (1) that serves as a guide, a sliding assembly that adjusts the lateral displacement deviation of the longitudinal main reinforcement bars of the upper and lower sections of the steel cage, a main reinforcement bar grabbing hook assembly (4) that grabs and fixes the longitudinal main reinforcement bars of the steel cage, and a fixing groove (5) fixed on the constraint sliding rod (1) for fixing the sliding assembly. The sliding assembly includes a hinge support connecting rod (24), whose two ends are respectively hinged to a fixing block and the main reinforcement bar grabbing hook assembly (4) through hinge support spheres. By rotating the hinge supports at both ends, the lateral distance between the longitudinal main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod (1) is adjusted. The fixing block restricts the hinge support connecting rod (24) from tilting to horizontal, so that the distance between the main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod (1) remains consistent, thereby achieving coaxial and precise longitudinal alignment of the longitudinal main reinforcement bars of the upper and lower sections of the steel cage.

Description

Technical Field

[0001] This invention belongs to the field of construction technology, and more specifically, relates to an auxiliary device for constraining the longitudinal main reinforcement of a steel cage and its usage method. Background Technology

[0002] With the continuous development of urban construction, the demand for large-scale building projects is constantly increasing. As an important component of foundation engineering, bored pile technology plays a crucial role in building construction. Bored pile technology, with its advantages of high bearing capacity, high construction efficiency, and strong adaptability, has been widely used in foundation treatment, pile caps, and underground structures. Bored piles feature large-diameter reinforcing cages with numerous and high-specification main reinforcement bars. These cages are mostly extended using welding or mechanical sleeves. During the extension process, the connection of the reinforcing cage is a critical step. Reinforcing cage connection auxiliary devices can effectively solve the problem of precise connection during the connection process, and therefore have been widely used in the construction field, especially in large-scale projects such as high-rise buildings, bridges, and tunnels. These devices not only improve construction efficiency and quality but also reduce construction costs and risks.

[0003] As disclosed in patent application number 202410739553.2, this invention discloses a rebar cage alignment and connection device and method. The device includes sleeves, connecting rods, and clamping mechanisms. The sleeves are slidably mounted on the connecting rods and arranged in a spaced-apart ring. The clamping mechanisms are respectively disposed on each sleeve. Each clamping mechanism includes an abutting rod and a pushing component. The abutting rod is rotatably disposed in the sleeve, and the pushing component is slidably disposed on the sleeve. Pushing the pushing component causes the abutting rod to abut against the rebar extending into the sleeve, thereby clamping and fixing the rebar. This invention solves the problems of existing rebar cages where misalignment at the rebar cage joints during the connection process leads to significant deviations, making connection impossible using sleeves, or gaps between some rebar joints after connection using sleeves, resulting in the rebar cage failing to meet specifications. However, the invention uses abutting rods to hold the rebar in place, which fails to meet the performance requirements of the mechanical connection joints of the rebar, and the number of sleeves is excessive. For example, patent document application number 202311496261.2 discloses an adjustable connecting sleeve, including a first inner threaded sleeve, a second inner threaded sleeve, an outer threaded sleeve, a first lock nut, and a second lock nut. Both the second lock nut and the first inner threaded sleeve are connected to the ends of the main reinforcing bars of the reinforcing cage segment. A first lock nut is connected to the outer thread of the first inner threaded sleeve. The rebar cage butt welding construction method includes the following steps: Step 1, processing and transporting the rebar cage to the construction site; Step 2, hoisting the first segment of the rebar cage; Step 3, hoisting the second segment of the rebar cage; etc. This butt welding construction method utilizes the combined action of a guide and the adjustable connecting sleeve to achieve coaxiality of the main reinforcing bars of the rebar cage, allowing for adjustment of the centering and end spacing of the main reinforcing bars; it utilizes the stepless adjustment of the left and right rotation of the threads to achieve common spiral lines, resulting in low construction costs and stable and reliable joint connection performance, meeting the Class I joint performance requirements specified in the industry standard "Technical Specification for Mechanical Connection of Rebars" JGJ107. However, the device cannot utilize existing steel reinforcement for mechanical connection, has too many upper and lower inner and outer threaded sleeves, and is cumbersome to operate. Furthermore, when there is a large lateral displacement between the second and first steel reinforcement cages during hoisting, the threaded sleeves are still difficult to align, affecting the docking speed.

[0004] In existing drilled pile reinforcement cage splicing technology, when using lifting equipment to hoist and splice the upper section of the reinforcement cage, multiple people are required to manually splice the longitudinal main bars of the upper and lower sections of the reinforcement cage. This is not only inefficient, but also makes it difficult to move the main bars and insert the end of the lower section of the longitudinal main bar into the end sleeve of the upper section of the longitudinal main bar, affecting the quality of the reinforcement joint. The splicing method has problems such as low efficiency and low precision, which affects the construction quality and safety. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a longitudinal main reinforcement bar docking constraint auxiliary device and its usage method for steel cages. This device uses a main reinforcement bar grabbing hook assembly to grab and fix the main reinforcement bars of the upper and lower sections of the steel cage. A sliding assembly slides within the constraint sliding rod groove, adjusting the lateral deviation displacement during the hoisting and docking of the upper and lower sections of the steel cage. Ultimately, the hinge support connecting rod is horizontal under the constraint of the fixed block, ensuring that the distance between the main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod remains consistent. The ends of the main reinforcement bars can only move longitudinally and coaxially towards each other, thereby achieving precise coaxial longitudinal alignment of the longitudinal main reinforcement bars of the upper and lower sections of the steel cage, improving docking accuracy, and enabling simultaneous docking from multiple directions, thus improving construction efficiency.

[0006] To achieve the above objectives, according to one aspect of the present invention, a longitudinal main reinforcement bar docking constraint auxiliary device for a steel cage is provided, comprising a constraint sliding rod for guiding, a first sliding assembly and a second sliding assembly for adjusting the lateral displacement deviation of the upper and lower sections of the steel cage main reinforcement bars, a main reinforcement bar gripping hook assembly for gripping and fixing the longitudinal main reinforcement bars of the steel cage, and a fixing groove fixed to the constraint sliding rod for fixing the first sliding assembly and the second sliding assembly, wherein:

[0007] The first sliding assembly includes a hinge support connecting rod, one end of which is hinged to the first fixed block via a first hinge support ball, and the other end is hinged to the main rib hook assembly via a second hinge support ball.

[0008] The second sliding assembly includes a hinge support connecting rod, one end of which is hinged to the second fixed block via a first hinge support ball, and the other end is hinged to the main rib hook assembly via a second hinge support ball.

[0009] The hinge support connecting rod adjusts the lateral distance between the main reinforcement bars of the steel cage and the constraint sliding rod by rotating the hinge supports at both ends. The first fixing block and the second fixing block restrict the hinge support connecting rod to a horizontal state, so that the distance between the main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod remains consistent. The ends of the main reinforcement bars can only move coaxially and longitudinally to approach each other, so as to achieve coaxial and precise longitudinal alignment of the main reinforcement bars of the upper and lower sections of the steel cage.

[0010] Furthermore, the main rib grabbing hook assembly includes a hinge support module with a second hinge support ball inside and a grabbing hook module for fixing the main rib.

[0011] Furthermore, the hinge support module includes a hollowed-out groove and a telescopic support rod that moves inside it and is fixed to the hook module.

[0012] Furthermore, the hinge support module also includes a positioning bolt for adjusting the displacement of the telescopic support rod along the direction of the hollow groove, which passes through the hollow groove and is fixed to the telescopic support rod, and a nut for fixing the positioning bolt.

[0013] Furthermore, the hinge support module also includes a nut and a washer for fixing the positioning bolt.

[0014] Furthermore, the hook module includes a fastening bolt, which can be adjusted to move in the direction perpendicular to the hollowed-out groove to tighten the main rib and fix the main ribs of different diameters.

[0015] Furthermore, the hook module also includes a powerful spring located in the gap of the hollowed-out groove. After the main reinforcement bars of the upper and lower steel cages are connected, the nut is loosened, and the telescopic support rod springs open the hook module under the elastic force of the powerful spring, thereby realizing the rapid separation of the hook module from the longitudinal main reinforcement bar.

[0016] Furthermore, the constraint sliding rod includes a slide rail that provides a guide track for the first sliding component and the second sliding component.

[0017] According to another aspect of the present invention, the present invention provides a method for using a longitudinal main reinforcement bar butt restraint auxiliary device for steel cages, which is implemented by applying the above-described longitudinal main reinforcement bar butt restraint auxiliary device for steel cages, characterized in that the specific implementation steps are as follows:

[0018] S100: Device Preparation: The first sliding assembly enters from the top of the slide rail of the constraint sliding rod, and the second sliding assembly enters from the bottom of the slide rail of the constraint sliding rod. The fixed stop groove is connected to the constraint sliding rod. The first and second sliding assemblies are connected to the main reinforcement hook assembly through the hinge support, completing the assembly of the entire device and preparing for the rebar cage docking operation;

[0019] S200: Rough alignment of steel cage hoisting: Use hoisting equipment to hoist the upper section of steel cage to about 1 meter above the lower section of steel cage for rough alignment, pause the descent of the upper section of steel cage, and roughly connect the main bar hook assembly of the first sliding component and the second sliding component to the ends of the longitudinal main bars of the upper and lower sections of steel cage. Repeat the installation of the device of the present invention around the upper and lower sections of steel cage in four directions.

[0020] S300: Adjust the alignment of the sliding components: Use the lifting equipment to continue lowering the upper section of the steel cage. During the descent, the first and second sliding components gradually slide towards each other and approach the fixed groove. The hinge support connecting rod also gradually rotates along the spheres of the hinge supports at both ends, changing from an inclined state to a horizontal state. At this point, the distance between the longitudinal main bars of the upper and lower sections of the steel cage and the constraint sliding rod remains dynamically consistent. The ends of the main bars can only move longitudinally and coaxially to approach each other.

[0021] S400: Butt Locking: Continue lowering the upper section of the reinforcing cage until the mechanical sleeve at the bottom of its longitudinal main reinforcement bar is approximately 10 mm from the rib-peeling thread at the top of the lower section's main reinforcement bar. Use a wrench to rotate the mechanical sleeve into the rib-peeling thread of the lower section's longitudinal main reinforcement bar, causing relative axial movement between the two bars until they are aligned. Simultaneously tighten the mechanical sleeve in all directions around the upper and lower sections of the reinforcing cage to complete the butt connection of the longitudinal main reinforcement bars at all corresponding positions in the entire upper and lower sections of the reinforcing cage.

[0022] S500: Device Separation: After the docking is completed, loosen the nut and fastening bolt of the positioning screw of the main reinforcement hook assembly, remove the device of the present invention, and prepare it for use in the next rebar cage docking section.

[0023] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0024] 1. The auxiliary device of the present invention uses a main bar grabbing hook assembly to grab and fix the main bars of the upper and lower sections of the steel cage. The sliding assembly slides in the groove of the constraint sliding rod to adjust the lateral deviation displacement when the upper and lower sections of the steel cage are hoisted and connected. Finally, the hinge support connecting rod is in a horizontal state under the restriction of the fixed block, so that the distance between the main bars of the upper and lower sections of the steel cage and the constraint sliding rod is consistent. The ends of the main bars can only move coaxially and longitudinally to approach each other, so as to achieve coaxial and precise longitudinal alignment of the longitudinal main bars of the upper and lower sections of the steel cage.

[0025] 2. In the auxiliary device of the present invention, the sliding component and the longitudinal main bar hook are connected by a double hinge support, which can adapt to the lateral deviation displacement generated when the upper and lower sections of the steel cage are hoisted and connected, and constrain the ends of the longitudinal main bars of the upper and lower sections of the steel cage, thereby controlling and reducing the lateral deviation displacement.

[0026] 3. The auxiliary device of the present invention, in which the main reinforcement hook assembly is fixed by means of positioning bolts, telescopic support rods and fastening bolts when bound to the main reinforcement, can adapt to longitudinal main reinforcements of different sizes. Loosening the nut, under the action of a strong spring, allows the hook module to be quickly unbound from the longitudinal main reinforcement.

[0027] 4. The auxiliary device of the present invention, when the upper section of the steel cage is lowered, relies solely on the weight of the steel cage itself to push the device to achieve the longitudinal main reinforcement ends to autonomously tend to be aligned in the same direction, without the need for manual support and control, thus reducing the number of workers required.

[0028] 5. The device of the present invention has a small number of components, is easy and quick to assemble and disassemble, and can be evenly arranged and installed around the outside of the main reinforcement bars of the upper and lower sections of the steel cage. After the batch of steel cages is connected, it can be reused in the next batch, which can effectively improve the construction efficiency of connecting the longitudinal main reinforcement bars of the upper and lower sections of the steel cage. It has a high turnover rate, saves costs, and has wider practicality and applicability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a longitudinal main reinforcement bar butt restraint auxiliary device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the constraint sliding rod in an embodiment of the present invention;

[0031] Figure 3 These are top and front views of the fixing groove of the device according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the first sliding component of the device according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the second sliding component of the device according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the longitudinal main rib grabbing hook of the device according to an embodiment of the present invention;

[0035] Figure 7 This is a top view of the longitudinal main rib grabbing hook of the device according to an embodiment of the present invention;

[0036] Figure 8 This is a left view of the longitudinal main rib grabbing hook of the device according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic cross-sectional view of the device and the longitudinal main reinforcement bars of the upper and lower steel cages in an embodiment of the present invention.

[0038] Figure 10 This is a schematic cross-sectional view of the hinge support connecting rods of the upper and lower sliding components being fixed in a horizontal state when the longitudinal main reinforcement of the upper section of the steel cage in the embodiment of the present invention descends.

[0039] Figure 11 This is a schematic diagram illustrating the application of the device in this invention for fixing the longitudinal main bars of the upper and lower steel cages;

[0040] Figure 12 This is a flowchart illustrating the usage of a longitudinal main reinforcement bar docking constraint auxiliary device for a steel cage, according to an embodiment of the present invention.

[0041] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-constraint sliding rod, 11-slide rail, 2-first sliding assembly, 21-first fixing block, 22-first hinge support sphere, 23-second hinge support sphere, 24-hinge support connecting rod, 3-second sliding assembly, 31-second fixing block, 4-main reinforcement hook assembly, 41-hinge support module, 411-positioning bolt, 412-hollowed-out slide groove, 413-telescopic support rod, 414-nut, 415-washer, 42-hook module, 421-strong spring, 422-fastening bolt, 5-fixed stop groove, 51-slide groove, 52-blocking surface, 6-upper section main reinforcement of steel cage, 7-lower section main reinforcement of steel cage, 8-mechanical sleeve. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0043] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0045] In this patent, the terms "comprising," "including," or any other variations thereof are intended to cover a 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 limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0046] like Figure 1 As shown, this embodiment of the invention provides a longitudinal main reinforcement bar docking constraint auxiliary device for a steel cage, including a constraint sliding rod 1 for guiding, a first sliding component 2, a second sliding component 3, a main reinforcement bar grabbing hook component 4 hinged to the first sliding component 2 and the second sliding component 3 for grabbing and fixing the longitudinal main reinforcement bars of the steel cage, and a fixing groove 5 fixed to the constraint sliding rod 1 for fixing the first sliding component 2 and the second sliding component 3. The first sliding component 2 and the second sliding component 3 each include a fixing block, a hinge support ball, and a hinge support connecting rod 24. The two ends of the hinge support connecting rod 24 are respectively hinged to the fixing block and the main reinforcement bar grabbing hook component 4 through the hinge support ball. By rotating the hinge supports at both ends, the lateral distance between the longitudinal main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod 1 can be adjusted to realize the adjustment of the lateral deviation displacement during hoisting and docking. The main reinforcement hook assembly 4 is fixed to the main reinforcement bars of the upper and lower sections of the steel cage. During the lowering of the steel cage, the first sliding assembly 2 and the second sliding assembly 3 slide towards each other and approach the fixed stop groove 5 on the constraint sliding rod 1. The hinge support connecting rod 24 of the sliding assembly is restricted by the fixed block and forms a horizontal state. The distance between the main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod 1 remains consistent, thereby achieving coaxial and precise longitudinal alignment of the longitudinal main reinforcement bars of the upper and lower sections of the steel cage, improving the docking accuracy and construction efficiency.

[0047] like Figure 2 As shown, the constraint sliding rod 1 includes a slide rail 11 that provides guide tracks for the first sliding component 2 and the second sliding component 3, enabling them to move up and down along a predetermined path. The fixing groove 5 is fixed at a slightly downward position in the middle of the constraint sliding rod 1. When the first sliding component 2 and the second sliding component 3 move along the slide rail 11, the fixing groove 5 fixes their positions, thereby ensuring the accuracy of the docking.

[0048] like Figure 3As shown, the fixed groove 5 includes a sliding groove 51 and a blocking surface 52. When the first sliding component 2 and the second sliding component 3 enter the sliding groove 51, the blocking surface 52 in the middle of the device prevents the first sliding component 2 from sliding down and the second sliding component 3 from sliding up, thereby achieving the final positioning of the main rib and ensuring the accuracy and safety of the docking.

[0049] like Figure 4 As shown, the first sliding component 2 includes a first fixing block 21, a first hinge support ball 22, a second hinge support ball 23, and a hinge support connecting rod 24. One end of the hinge support connecting rod 24 is connected to the first fixing block 21 through the first hinge support ball 22, and the other end is connected to the main rib hook assembly 4 through the second hinge support ball 23. The hinge support connecting rod 24 can be adjusted in the up, down, left, and right directions. When it is raised to the horizontal state, it is restricted by the first fixing block 21 and cannot be adjusted upwards further.

[0050] The first sliding component 2 is inserted into the slide rail 11 from the top of the constraint sliding rod 1. It slides up and down along the slide rail 11 between the top of the constraint sliding rod 1 and the fixed stop groove 5. When the first sliding component 2 slides down into the slide groove 51, the blocking surface 52 prevents the first sliding component 2 from sliding down further. The hinge support connecting rod 24 can no longer be adjusted downward. At this time, the hinge support connecting rod 24 is restricted from adjusting up, down, left, and right. The distance between the constraint sliding rod 1 and the main reinforcement of the upper section of the steel cage remains unchanged.

[0051] Similarly, such as Figure 5 As shown, the second sliding component 3 includes a second fixing block 31, a first hinge support ball 22, a second hinge support ball 23, and a hinge support connecting rod 24. When the hinge support connecting rod 24 is in the upward horizontal state, it is restricted by the second fixing block 31 and cannot be adjusted downward.

[0052] The second sliding component 3 is inserted into the slide rail 11 from the bottom of the constraint sliding rod 1. It slides up and down along the slide rail 11 between the bottom of the constraint sliding rod 1 and the fixed stop groove 5. When the second sliding component 3 slides upward into the slide groove 51 of the fixed stop groove 5, the blocking surface 52 prevents the second sliding component 3 from sliding upward. The hinge support connecting rod 24 can no longer be adjusted upward. At this time, the hinge support connecting rod 24 is restricted from adjusting up, down, left and right. The distance between the constraint sliding rod 1 and the lower section of the steel cage remains unchanged, so that the distance between the main reinforcement bars of the upper and lower sections of the steel cage and the constraint sliding rod 1 is kept consistent, thereby achieving coaxial and precise longitudinal alignment of the longitudinal main reinforcement bars of the upper and lower sections of the steel cage.

[0053] like Figure 6-8As shown, the main rib grabbing hook assembly 4 includes a hinge support module 41 with the second hinge support ball 23 inside and a grabbing hook module 42 for grabbing and fixing the main rib; wherein the hinge support module 41 includes a positioning bolt 411, a hollow sliding groove 412, a telescopic support rod 413, a nut 414 and a washer 415; the grabbing hook module 42 includes a strong spring 421 and a fastening bolt 422.

[0054] The positioning bolt 411 is fixedly installed at the end of the telescopic support rod 413 within the hollowed-out groove 412, which limits the displacement of the telescopic support rod 413 along the Y-axis, thereby adjusting the distance between the hinge support module 41 and the hook module 42. According to the different diameters of the main reinforcing bars in the steel cage, the positioning bolt 411 is adjusted within the hollowed-out groove 412 along the Y-axis, and the nut 414 is tightened by the washer 415. Along the X-axis, the fastening bolt 422 is adjusted to tighten the main reinforcing bars and prevent mutual displacement, thus achieving a firm connection between the main reinforcing bar hook assembly 4 and main reinforcing bars of different diameters. The telescopic support rod 413 within the hollowed-out groove 412 is equipped with a strong spring 421 at the top and bottom. After the main reinforcing bars of the upper and lower steel cages are connected, the nut 414 is loosened, and the telescopic support rod 413, under the elastic force of the strong spring 421, springs open the hook module 42, separating the hook module 42 from the main reinforcing bar.

[0055] like Figure 9-12 As shown in the figure, this embodiment of the invention provides a method for using a longitudinal main bar butt restraint auxiliary device for steel cages. The method utilizes the aforementioned longitudinal main bar butt restraint auxiliary device for steel cages, and the specific steps are as follows:

[0056] S100: Device preparation: The first sliding component 2 enters from the top of the slide rail 11 of the constraint sliding rod 1, and the second sliding component 3 enters from the bottom of the slide rail 11 of the constraint sliding rod 1. The fixed stop groove 5 is connected to the constraint sliding rod 1. The first sliding component 2 and the second sliding component 3 are connected to the main reinforcement hook component 4 through the hinge support, completing the assembly of the entire device and preparing for the rebar cage docking operation;

[0057] S200: Reinforcing cage hoisting and rough alignment: Using hoisting equipment, hoist the main reinforcement bar 6 of the upper section of the reinforcing cage to a position approximately 1 meter directly above the main reinforcement bar 7 of the lower section of the reinforcing cage for rough alignment. Pause the descent of the main reinforcement bar 6 of the upper section of the reinforcing cage, and roughly connect the main reinforcement bar hook assembly 4 of the first sliding assembly 2 and the second sliding assembly 3 to the ends of the longitudinal main reinforcement bars of the upper and lower sections of the reinforcing cage. Repeat the installation of the device of the present invention around the upper and lower sections of the reinforcing cage in four directions.

[0058] S300: Adjusting the sliding components and fine alignment: Continue to use the lifting equipment to lower the upper section of the steel cage. During the descent, the first sliding component 2 and the second sliding component 3 gradually slide towards each other and approach the fixed stop groove 5. The hinge support connecting rod 24 also gradually rotates along the first hinge support ball 22 and the second hinge support ball 23 and is finally restricted by the first fixed block 21 and the second fixed block 31 and becomes horizontal. During this process, the lateral deviation displacement of the longitudinal main bars of the upper and lower sections of the steel cage is continuously reduced until it disappears. The ends of the longitudinal main bars of the upper and lower sections of the steel cage are constrained, and their distance from the constraint sliding rod 1 remains dynamically consistent. The ends of the main bars can only move and approach each other in the coaxial longitudinal direction.

[0059] S400: Butt Locking: Continue lowering the upper section of the reinforcing cage until the mechanical sleeve 8 at the bottom of the longitudinal main reinforcement bar of the upper section is approximately 10 mm away from the top ribbed thread of the main reinforcement bar of the lower section. Use a wrench to rotate the mechanical sleeve 8 into the ribbed thread of the longitudinal main reinforcement bar of the lower section, causing the two reinforcement bars to move axially relative to each other until they are aligned. The mechanical sleeve can be tightened simultaneously in all directions around the upper and lower sections of the reinforcing cage to complete the butt connection of the longitudinal main reinforcement bars at all corresponding positions of the upper and lower sections of the reinforcing cage.

[0060] S500: Device separation: After the docking is completed, loosen the nut 414 and fastening bolt 422 of the positioning bolt 411 of the main reinforcement hook assembly 4, remove the device of the present invention, and prepare it for use in the next rebar cage docking section.

[0061] In summary, the device of the present invention can quickly and synchronously achieve precise docking between the mechanical connecting sleeves at the ends of the upper and lower main reinforcing bars and the ribbed threads of the reinforcing bars, which facilitates simultaneous and rapid tightening of the sleeves from multiple directions, improves the integrity and construction quality of the reinforcing cage docking, and enhances docking accuracy and construction efficiency.

[0062] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A restraining auxiliary device for the butt joint of longitudinal main bars in a steel cage, characterized in that, It includes a guiding constraint sliding rod (1), a first sliding assembly (2) and a second sliding assembly (3) for adjusting the lateral displacement deviation of the main reinforcement bars of the upper and lower sections of the steel cage, a main reinforcement hook assembly (4) for grabbing and fixing the longitudinal main reinforcement bars of the steel cage, and a fixing groove (5) fixed to the constraint sliding rod (1) for fixing the first sliding assembly (2) and the second sliding assembly (3), wherein: The first sliding component (2) includes a hinge support connecting rod (24), one end of which is hinged to the first fixed block (21) through the first hinge support ball (22), and the other end is hinged to the main rib hook assembly (4) through the second hinge support ball (23). The second sliding component (3) includes a hinge support connecting rod (24), one end of which is hinged to the second fixing block (31) through the first hinge support ball (22), and the other end is hinged to the main rib hook assembly (4) through the second hinge support ball (23). The hinge support connecting rod (24) rotates through the hinge supports at both ends to adjust the lateral distance between the main reinforcement of the steel cage and the constraint sliding rod (1). The first fixing block (21) and the second fixing block (31) restrict the hinge support connecting rod (24) to a horizontal state, so that the distance between the main reinforcement of the upper and lower sections of the steel cage and the constraint sliding rod (1) remains consistent. The ends of the main reinforcement can only move coaxially and longitudinally to approach each other, so as to achieve coaxial and precise longitudinal alignment of the main reinforcement of the upper and lower sections of the steel cage. The main reinforcement hook assembly (4) includes a hinge support module (41) with the second hinge support ball (23) inside and a hook module (42) for fixing the longitudinal main reinforcement. The hinge support module (41) includes a hollowed-out slide groove (412) and a telescopic support rod (413) that moves inside the groove and is fixed to the hook module (42). The hinge support module (41) also includes a positioning bolt (411) that passes through the hollow slide groove (412) and is fixed to the telescopic support rod (413) for adjusting the displacement of the telescopic support rod (413) along the direction of the hollow slide groove (412). The constraint sliding rod (1) includes a slide rail (11) that provides a guide track for the first sliding assembly (2) and the second sliding assembly (3). The fixed groove (5) includes a sliding groove (51) and a blocking surface (52). When the first sliding component (2) and the second sliding component (3) enter the sliding groove (51), the blocking surface (52) prevents the first sliding component (2) from sliding down and the second sliding component (3) from sliding up, thereby achieving the final positioning of the main rib and ensuring the accuracy of the connection.

2. The auxiliary device for constraining the longitudinal main reinforcement of a steel cage according to claim 1, characterized in that, The hinge support module (41) also includes a nut (414) and a washer (415) for fixing the positioning bolt (411).

3. The auxiliary device for constraining the longitudinal main reinforcement of a steel cage according to claim 2, characterized in that, The hook module (42) includes a fastening bolt (422). Adjusting the displacement of the fastening bolt (422) in the direction perpendicular to the hollowed-out groove (412) tightens the main rib, thereby fixing the main ribs of different diameters.

4. The auxiliary device for constraining the longitudinal main reinforcement of a steel cage according to claim 3, characterized in that, The hook module (42) also includes a strong spring (421) located in the gap of the hollowed-out groove (412). After the main reinforcement bars of the upper and lower steel cages are connected, the nut (414) is loosened, and the telescopic support rod (413) springs open the hook module (42) under the elastic force of the strong spring (421), thereby realizing the rapid separation of the hook module (42) from the longitudinal main reinforcement bars.

5. A method of using a longitudinal main reinforcement bar butt restraint auxiliary device for a steel cage, implemented by applying the longitudinal main reinforcement bar butt restraint auxiliary device for a steel cage as described in any one of claims 1-4, characterized in that, The specific implementation steps are as follows: S100: Device preparation: The first sliding component enters from the top of the slide rail of the constraint sliding rod, and the second sliding component enters from the bottom of the slide rail of the constraint sliding rod. The fixed stop groove is connected to the constraint sliding rod. The first sliding component and the second sliding component are connected to the main reinforcement hook component through the hinge support to complete the assembly of the entire device and prepare for the rebar cage docking operation. S200: Rough alignment of steel cage hoisting: Use hoisting equipment to hoist the upper section of steel cage to 1 meter directly above the lower section of steel cage for rough alignment, pause the descent of the upper section of steel cage, and roughly connect the main bar hook components of the first sliding component and the second sliding component to the ends of the longitudinal main bars of the upper and lower sections of steel cage. Repeat the installation of the device of the present invention around the upper and lower sections of steel cage in four directions. S300: Adjust the alignment of the sliding components: Use the lifting equipment to continue lowering the upper section of the steel cage. During the descent, the first and second sliding components gradually slide towards each other and approach the fixed groove. The hinge support connecting rod also gradually rotates along the spheres of the hinge supports at both ends, changing from an inclined state to a horizontal state. At this point, the distance between the longitudinal main bars of the upper and lower sections of the steel cage and the constraint sliding rod remains dynamically consistent. The ends of the main bars can only move longitudinally and coaxially to approach each other. S400: Butt Locking: Continue to lower the upper section of the steel cage until the mechanical sleeve at the bottom of its longitudinal main bar is 10 mm away from the rib stripping thread at the top of the main bar of the lower section of the steel cage. Use a wrench to rotate the mechanical sleeve into the rib stripping thread of the lower longitudinal main bar to make the two bars move relative to each other axially until they are aligned. Tighten the mechanical sleeve simultaneously in all directions around the upper and lower sections of the steel cage to complete the butt locking of the longitudinal main bars at all corresponding positions of the upper and lower sections of the steel cage. S500: Device Separation: After the docking is completed, loosen the nut and fastening bolt of the positioning screw of the main reinforcement hook assembly, remove the device of the present invention, and prepare it for use in the next rebar cage docking section.

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