Reinforcement cage manufacturing device using short line matching method

Abstract

The utility model provides a reinforcement cage manufacturing device applying a short line matching method, which comprises a movable end and a fixed end, a space between the movable end and the fixed end is used for binding a reinforcement cage, the reinforcement cage is placed on a plurality of uniformly distributed round rollers, a plurality of limiting frames are arranged among the round rollers, and the movable end comprises a first base. A vertical first straining beam is arranged on one side of the first base, a plurality of first main beams are arranged between the first base and the first straining beam, first inclined struts are arranged between the first straining beam and the first main beams, and the bottom of the first base is movably connected with the ground. The problems that in traditional reinforcement cage construction, a manufacturing device for segmented installation of the ultra-long reinforcement cage is low in reuse rate and high in manufacturing cost are solved.

Description

Technical Field

[0001] This utility model relates to the field of steel cage manufacturing, and in particular to a steel cage manufacturing device using the short-line matching method. Background Technology

[0002] The short-line matching method in steel cage fabrication is a method used in the prefabrication of steel cages. The steel cage segments that are manufactured first are used as matching beam segments, and the steel cage segments manufactured later are matched with them. By precisely controlling the cutting, bending, and binding of steel bars, the size and shape accuracy of each steel cage segment is ensured, so that it can be quickly and accurately spliced ​​and installed on site.

[0003] The overall hoisting of ultra-long steel cages uses heavy lifting equipment, which poses significant safety risks, requires ample space, and incurs high rental costs. In contrast, the hoisting of steel cages in sections is less costly and carries less safety risk. However, conventional methods for hoisting steel cages in sections result in a low pass rate for the main reinforcement connections, leading to significant quality risks and rework rates in pile foundation construction. The one-time pass rate for the main reinforcement connections is particularly important, and the current method has its flaws and needs improvement. Utility Model Content

[0004] The main purpose of this utility model is to provide a steel cage fabrication device that uses the short-line matching method, which solves the problems of low reuse rate and high cost of fabrication devices for segmented installation of ultra-long steel cages in traditional steel cage construction.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a steel cage manufacturing device using the short-line matching method, including a moving end and a fixed end, the space between the moving end and the fixed end is used for binding the steel cage, the steel cage is placed on multiple evenly distributed cylindrical rollers, and multiple limiting frames are provided between the cylindrical rollers.

[0006] The mobile terminal includes a first base, a first tie beam is provided on one side of the first base, a plurality of first main beams are provided between the first base and the first tie beam, and a first diagonal brace is provided between the first tie beam and the first main beam;

[0007] The bottom of the first base is movably connected to the ground.

[0008] In the preferred embodiment, the fixed end includes a second base, a vertical second tie beam is provided on one side of the second base, a plurality of second main beams are provided between the second base and the second tie beam, and a second diagonal brace is provided between the second tie beam and the second main beam;

[0009] The bottom of the second base is anchored to the ground.

[0010] In the preferred embodiment, the second tie beam is arranged opposite to the first tie beam, and the main reinforcement in step S3 is placed between the second tie beam and the first tie beam.

[0011] In the preferred embodiment, the limiting frame includes a steel section, and multiple vertical clamping plates are provided above the steel section. The vertical clamping plates are used to limit the width of the reinforcing cage, and buckles are provided inside the vertical clamping plates for placing the main reinforcing bars.

[0012] In the preferred embodiment, the steel profile is provided with a steel profile groove, and the steel profile groove is also provided with an elongated hole. A vertical clamping plate is arranged in the steel profile groove, and a horizontal moving bolt is provided at the bottom of the vertical clamping plate. The horizontal moving bolt is used to control the lateral movement of the vertical clamping plate.

[0013] In the preferred embodiment, the vertical plate is provided with a vertical groove, the main reinforcement is placed in the vertical groove, one side of the vertical groove is provided with a side plate, the side plate is provided with an elongated hole, and the buckle is arranged in the elongated hole and can slide up and down. The buckle is used to control the height of the main reinforcement.

[0014] This utility model provides a rebar cage fabrication device using the short-line matching method, which has the following advantages: By fabricating and installing the rebar cage using the short-line matching method, a binding space is formed between the fixed end and the moving end. Through meticulous construction, the first-time pass rate of the main reinforcement connection is ensured during the sectional hoisting of the rebar cage, reducing rework in rebar cage fabrication and installation. It can significantly improve construction efficiency, uses simple and easy-to-operate materials, has a reasonable overall process, is safe and reliable, has high feasibility, and offers good economic benefits. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the first step in the fabrication of the first section of the steel cage of this utility model.

[0017] Figure 2 This is a schematic diagram of the second step in the fabrication of the first section of the steel cage of this utility model;

[0018] Figure 3 This is a schematic diagram of the third step in the fabrication of the first section of the steel reinforcement cage of this utility model;

[0019] Figure 4 This is a schematic diagram showing the completed fabrication of the first section of the steel cage of this utility model;

[0020] Figure 5 This is a schematic diagram of the first step in the fabrication of the steel cage matching process of this utility model;

[0021] Figure 6 This is a schematic diagram of the second step in the fabrication of the steel cage matching method of this utility model;

[0022] Figure 7 This is a schematic diagram of the third step in the fabrication of the steel cage matching process of this utility model;

[0023] Figure 8 This is a schematic diagram of the completed fabrication of the steel cage matching according to this utility model;

[0024] Figure 9 This is a schematic diagram of the lifting of the completed steel cage according to this utility model;

[0025] Figure 10 This is a schematic diagram of the first step in the fabrication of the head and tail steel cages of this utility model.

[0026] Figure 11 This is a schematic diagram of the second step in the fabrication of the first and last steel reinforcement cages of this utility model.

[0027] Figure 12 This is a schematic diagram of the completed fabrication of the first and last steel reinforcement cages of this utility model.

[0028] Figure 13 This is a schematic diagram of the lifting of the first and last steel reinforcement cages of this utility model;

[0029] Figure 14 This is a schematic diagram of the lifting and installation plan of this utility model;

[0030] Figure 15 This is a schematic diagram of the lifting and installation longitudinal section of this utility model;

[0031] Figure 16 This is a schematic diagram of the longitudinal section of the lifting posture adjustment of the steel cage according to this utility model;

[0032] Figure 17 This is a schematic diagram of the installation of the first section of the steel cage of this utility model;

[0033] Figure 18 This is a schematic diagram of the connection of the main reinforcement bars of the multi-section steel cage of this utility model;

[0034] Figure 19 This is a schematic diagram of the lowering of the multi-section steel cage of this utility model;

[0035] Figure 20 This is a structural schematic diagram of the limiting frame of this utility model.

[0036] In the diagram: 1. Moving end; 101. First base; 102. First main beam; 103. First tie beam; 104. First diagonal brace; 2. Moving end; 201. Second base; 202. Second main beam; 203. Second tie beam; 204. Second diagonal brace; 3. Reinforcing cage; 301. Main reinforcement; 302. Stirrup; 301. Half thread; 3012. Full thread; 4. Circular roller; 5. Limiting frame; 501. Section steel; 502. Vertical clamp; 503. Steel channel; 504. Horizontal bolt; 505. Vertical slide; 506. Side upright plate; 507. Crane; 7. Lifting tool; 9. Straight threaded sleeve. Detailed Implementation

[0037] Example 1

[0038] like Figure 1-20As shown, a steel cage manufacturing device using the short-line matching method includes a movable end 1 and a fixed end 2. The space between the movable end 1 and the fixed end 2 is used for binding the steel cage 3. The steel cage 3 is placed on a plurality of evenly distributed cylindrical rollers 4, and a plurality of limiting frames 5 are provided between the cylindrical rollers 4.

[0039] Mobile terminal 1 includes a first base 101, a first tie beam 103 is provided on one side of the first base 101, a plurality of first main beams 102 are provided between the first base 101 and the first tie beam 103, and a first diagonal brace 104 is provided between the first tie beam 103 and the first main beam 102.

[0040] The bottom of the first base 101 is movably connected to the ground.

[0041] In the preferred embodiment, the fixed end 2 includes a second base 201, a second tie beam 203 is provided on one side of the second base 201, a plurality of second main beams 202 are provided between the second base 201 and the second tie beam 203, and a second diagonal brace 204 is provided between the second tie beam 203 and the second main beam 202.

[0042] The bottom of the second base 201 is anchored to the ground.

[0043] In the preferred embodiment, the second tie beam 203 is arranged opposite to the first tie beam 103, and the main reinforcement 301 in step S3 is placed between the second tie beam 203 and the first tie beam 103.

[0044] In the preferred embodiment, the limiting frame 5 includes a steel section 501, and a plurality of vertical clamping plates 502 are provided above the steel section 501. The vertical clamping plates 502 are used to limit the width of the reinforcing cage 3. The vertical clamping plates 502 are provided with buckles 503, which are used to place the main reinforcing bars 301.

[0045] In the preferred embodiment, the steel section 501 is provided with a steel section groove 504, and the steel section groove 504 is also provided with an elongated hole. The vertical clamping plate 502 is arranged in the steel section groove 504, and the bottom of the vertical clamping plate 502 is provided with a transverse moving bolt 505, which is used to control the transverse movement of the vertical clamping plate 502.

[0046] In the preferred embodiment, the vertical plate 502 is provided with a vertical groove 506, the main reinforcement 301 is placed in the vertical groove 506, and a side plate 507 is provided on one side of the vertical groove 506. The side plate 507 is provided with an elongated hole, and a buckle 503 is arranged in the elongated hole and can slide up and down. The buckle 503 is used to control the height of the main reinforcement 301.

[0047] Example 2

[0048] Further explanation in conjunction with Example 1, such as Figure 1-20 The structure shown illustrates a construction method for reinforced cage pile foundations using the short-line matching method, which includes:

[0049] S1. Cut the length of the main reinforcement bars 301 in multiple standard sections;

[0050] S2. Then, thread both ends of all main reinforcing bars 301 using specialized equipment, with one end being half-threaded (3011) and the other end being fully threaded (3012). After threading, the ends of the main reinforcing bars 301 are upset.

[0051] S3. Place multiple main reinforcing bars 301 in the fabrication device and tie them into a steel cage 3 as a standard segment;

[0052] S4. Align the main reinforcement 301 of the next segment with the main reinforcement 301 of the standard segment in the fabrication device and connect them sequentially using straight threaded sleeves 9.

[0053] S5. Repeat step S4 to complete the binding of the second section of the steel cage 3. After binding is completed, remove the straight threaded sleeve 9 and use the lifting tool 7 to transfer the first section of the steel cage 3. Then, repeat steps S1 to S6 to complete the continuous fabrication of the steel cage 3.

[0054] S6. At the site of the transfer of the first section of the steel cage 3, the first section of the steel cage 3 is hoisted by the crane 6. The first section of the steel cage 3 is first hoisted into the pile foundation hole and fixed on the top of the first section of the steel cage 3 with square steel.

[0055] S7. Use crane 6 to lift the second section of steel cage 3 onto the first section of steel cage 3, connect the main bars 301 of the two sections of steel cage, and connect them with straight threaded sleeve 9.

[0056] S5. Repeat steps S6 to S7 to complete the hoisting of the entire pile foundation reinforcement cage.

[0057] In the preferred embodiment, in step S3, the manufacturing device includes a movable end 1 and a fixed end 2. The space between the movable end 1 and the fixed end 2 is used to tie the reinforcing cage 3. The reinforcing cage 3 is placed on a plurality of evenly distributed cylindrical rollers 4, and a plurality of limiting frames 5 are provided between the cylindrical rollers 4.

[0058] In the preferred embodiment, the mobile terminal 1 includes a first base 101, a first tie beam 103 is provided on one side of the first base 101, a plurality of first main beams 102 are provided between the first base 101 and the first tie beam 103, and a first diagonal brace 104 is provided between the first tie beam 103 and the first main beam 102.

[0059] The bottom of the first base 101 is movably connected to the ground.

[0060] In the preferred embodiment, the fixed end 2 includes a second base 201, a second tie beam 203 is provided on one side of the second base 201, a plurality of second main beams 202 are provided between the second base 201 and the second tie beam 203, and a second diagonal brace 204 is provided between the second tie beam 203 and the second main beam 202.

[0061] The bottom of the second base 201 is anchored to the ground.

[0062] In the preferred embodiment, the second tie beam 203 is arranged opposite to the first tie beam 103, and the main reinforcement 301 in step S3 is placed between the second tie beam 203 and the first tie beam 103.

[0063] In the preferred embodiment, the limiting frame 5 includes a steel section 501, and a plurality of vertical clamping plates 502 are provided above the steel section 501. The vertical clamping plates 502 are used to limit the width of the reinforcing cage 3. The vertical clamping plates 502 are provided with buckles 503, which are used to place the main reinforcing bars 301.

[0064] In the preferred embodiment, the steel section 501 is provided with a steel section groove 504, and the steel section groove 504 is also provided with an elongated hole. The vertical clamping plate 502 is arranged in the steel section groove 504, and the bottom of the vertical clamping plate 502 is provided with a transverse moving bolt 505, which is used to control the transverse movement of the vertical clamping plate 502.

[0065] The vertical plate 502 is provided with a vertical groove 506, and the main reinforcement 301 is placed in the vertical groove 506. A side plate 507 is provided on one side of the vertical groove 506. The side plate 507 is provided with an elongated hole, and a buckle 503 is arranged in the elongated hole and can slide up and down. The buckle 503 is used to control the height of the main reinforcement 301.

[0066] In the preferred embodiment, the length accuracy of the 301 main reinforcement bars 3 in the same segment of the steel cage in step S1 reaches ±2mm.

[0067] In the preferred embodiment, step S3 involves the following manufacturing method:

[0068] S31. Place the main bars 301 of the four steel cages 3 on the limiting frame 5 so that the main bars 301 and the stirrups 302 form the skeleton of the steel cage 3.

[0069] S32. Tie the main bars 301 of the steel cage 3 at equal intervals in sequence. One end of the main bar 301 is pressed against the fixed end 2 to ensure that all the main bars 301 are installed uniformly on the vertical surface.

[0070] S33, the other end of the main reinforcement 301 will push the moving end 1 forward to grind the uneven main reinforcement 301 until both ends of all the main reinforcement 301 are on the same vertical plane.

[0071] In the preferred embodiment, in step S32, the main reinforcement 301 is tied in two stages. After the first main reinforcement 301 is tied and fixed, the moving end 1 moves backward 1m and is fixed. The second row of main reinforcement 301 is tied 1m apart and the main reinforcement 301 is aligned with the moving end 1. The main reinforcement 301 at the fixed end 2 is polished to ensure that the length of the vertical surface remains consistent.

[0072] The detailed construction steps of a reinforced cage pile foundation construction method using the short-line matching method are as follows: Before construction, a comprehensive survey of the construction site is conducted, including the collection and analysis of information on geological conditions, groundwater level, and surrounding environment, to provide basic data for subsequent construction. Simultaneously, according to design requirements, all necessary materials are prepared, such as 301 main reinforcement bars, 302 stirrups, 9-threaded sleeves, and structural steel, ensuring their quality meets relevant standards. Specialized equipment is inspected and debugged to ensure its normal operation during construction.

[0073] Based on the construction drawings and site conditions, plan the placement of the fabrication equipment to ensure its stability and ease of operation. Simultaneously, prepare the lifting equipment 7 and crane 6, and conduct safety checks and load tests to ensure they can safely lift the required weight of the steel cage 3.

[0074] S1: According to the design requirements, the length of the main reinforcement bar 301 of each standard section is accurately calculated to ensure that the length accuracy of the main reinforcement bar 301 of the same section of the steel cage reaches ±2mm. Considering the subsequent processing and connection process, a certain processing allowance is reserved during cutting. Based on the calculated length, an additional 10mm is added to each main reinforcement bar 301 for subsequent threading, upsetting and grinding processes.

[0075] S2: Use high-precision cutting equipment to cut the length of multiple standard sections of main reinforcement 301. The cutting equipment should have accurate length measurement and positioning functions to ensure cutting accuracy. During the cutting process, each cut main reinforcement 301 is numbered and marked for subsequent processing and assembly operations.

[0076] S3: Thread both ends of all main reinforcing bars 301 using specialized equipment, one end with a half-thread 3011 and the other end with a full-thread 3012. The threading equipment should be precisely adjusted according to the diameter of the main reinforcing bar 301 and the required thread specifications to ensure that the threading depth, pitch, and tooth profile meet the design requirements. During the threading process, the threading quality should be monitored in real time, and a thread gauge should be used for random inspection to ensure that the threading quality is qualified.

[0077] S4: Upsetting treatment at both ends of the main reinforcing bar 301 after threading. The upsetting diameter is determined according to design requirements. Generally, the ends of the main reinforcing bar 301 can be upset to 10%-20% larger than the original diameter to enhance the strength of the connection. An advanced hydraulic upsetting machine should be used to ensure uniformity and dimensional accuracy of the upsetting. After upsetting, a quality inspection is performed on the upset area, including visual inspection; the surface should be smooth and free of cracks, and dimensional measurements should be taken to ensure that the upsetting quality meets the requirements.

[0078] S5: Install the movable end 1 and fixed end 2 of the fabrication device in the predetermined positions. For the movable end 1, the bottom of its first base 101 can be connected to the ground by rollers, and a locking device can be provided to facilitate the movement and positioning of the movable end 1. The first tie beam 103, the first main beam 102, and the first diagonal brace 104 on the first base 101 are precisely installed and connected to ensure the stability of the structure. The spacing of the first main beams 102 can be designed to be 500mm-800mm according to the size of the reinforcing cage 3 to ensure effective support for the reinforcing cage 3.

[0079] S6: For fixed end 2, the bottom of the second base 201 is firmly anchored to the ground with expansion bolts to ensure that fixed end 2 will not shift during construction. The installation of the second tie beam 203, the second main beam 202, and the second diagonal brace 204 must also ensure the structural stability and verticality.

[0080] S7: Install the steel section 501 of the limiting frame 5 between the moving end 1 and the fixed end 2 at predetermined intervals. The interval can be set to 2m-3m to ensure uniform support of the reinforcing cage 3. Finely adjust and install components such as the steel section channel 504, vertical clamping plate 502, buckle 503, vertical slide 506, and side upright plate 507 on the steel section 501. The spacing of the vertical clamping plate 502 can be designed according to the spacing of the main reinforcing bars 301, generally 150mm-200mm. The width of the vertical slide 506 should be slightly larger than the diameter of the main reinforcing bars 301 to ensure that the main reinforcing bars 301 can be smoothly inserted and can be moved and adjusted within a certain range.

[0081] S8: Place the four main reinforcing bars 301 of the steel cage 3 on the limiting frame 5, so that the main reinforcing bars 301 and the stirrups 302 form the skeleton of the steel cage 3. When placing the main reinforcing bars 301, use the buckles 503 and vertical slides 506 on the limiting frame 5 to initially position and adjust the position of the main reinforcing bars 301.

[0082] S9: Tie the main reinforcement bars 301 of the steel cage 3 at equal intervals in sequence. One end of the main reinforcement bar 301 should be pressed against the fixed end 2 to ensure that all main reinforcement bars 301 are installed uniformly on the vertical plane. High-strength steel wire can be used as the binding material. The binding spacing is set according to the design requirements. Bind the main reinforcement bars 301 every 200mm-300mm along their length.

[0083] S10: The main reinforcement bars 301 are tied in two stages. After the first stage of tying and fixing, the moving end 1 moves backward 1m and is then fixed. The second row of main reinforcement bars 301 is then tied, staggered by 1m. The main reinforcement bars 301 are aligned with the moving end 1. The main reinforcement bars 301 at the fixed end 2 are then ground to ensure consistent length on the vertical surface. During the grinding process, a grinding wheel and other equipment are used for fine grinding. The surface roughness after grinding is controlled within Ra3.2 to ensure the flatness of subsequent connections.

[0084] S11: During the binding process, measuring tools such as laser levels can be used to measure the verticality and flatness of the reinforcing cage 3 in real time to ensure that the overall shape of the reinforcing cage 3 meets the design requirements. For the bound reinforcing cage 3, temporary support structures can be used to reinforce it to prevent deformation in subsequent operations.

[0085] S12: Align the main reinforcing bars 301 of the next segment with the main reinforcing bars 301 of the standard segment in the fabrication device and connect them sequentially using straight threaded sleeves 9. Before connection, clean the threaded parts of the main reinforcing bars 301 to remove oil, rust, and other impurities to ensure connection quality. Tighten the straight threaded sleeves 9 using a torque wrench. The torque value is determined according to the specifications and design requirements of the straight threaded sleeves 9. For straight threaded sleeves 9 with a diameter of 20mm, the tightening torque can be set to 200N・m-300N・m.

[0086] S13: During the connection process, a dedicated butt-jointing fixture is used to position and assist in the connection of the main rib 301, ensuring concentricity and perpendicularity of the butt joint. The connected area is then inspected using non-destructive testing methods such as ultrasonic testing to check the integrity and reliability of the connection.

[0087] S14: Repeat step S4 to complete the binding of the second section of the reinforcing cage 3. During the binding process, according to design requirements, reinforcing bars can be installed inside the reinforcing cage 3. The spacing of the reinforcing bars can be set to 2m to enhance the overall strength of the reinforcing cage 3.

[0088] S15: After the binding is completed, remove the straight threaded sleeve 9. Use special tools during the removal process to avoid damaging the main reinforcement 301 and the steel cage 3.

[0089] S16: Use lifting device 7 to transfer the first section of the reinforcing cage 3. The selection of lifting device 7 should be based on the weight and size of the reinforcing cage 3 to ensure sufficient load-bearing capacity and safety factor. During the transfer, use a traction rope to pull and control the reinforcing cage 3 to prevent it from swinging or colliding. Then, repeat steps S1 to S6 to complete the continuous fabrication of the reinforcing cage 3.

[0090] S17: The first section of the reinforcing cage 3 is transferred to the site using crane 6. Before hoisting, the hoisting parameters of crane 6 are reconfirmed, including lifting capacity, lifting height, and radius. The first section of the reinforcing cage 3 is then hoisted into the pile foundation hole, with the hoisting speed controlled between 0.5m / s and 1m / s to ensure the stability of the hoisting.

[0091] S18: Secure the top of the first section of the reinforcing cage 3 with square steel bars. The specifications of the square steel bars are selected according to the size and weight of the reinforcing cage 3. The connection between the square steel bars and the reinforcing cage 3 is made by welding or bolting. When welding, the welding quality should be ensured, with full welds and no defects such as slag inclusions or porosity.

[0092] S19: Use crane 6 to lift the second section of the reinforcing cage 3 onto the first section of the reinforcing cage 3, and connect the main bars 301 of the two sections of the reinforcing cage using a straight threaded sleeve 9. During the lifting process, use a laser alignment device to accurately align the positions of the two sections of the reinforcing cage 3 to ensure that the connection accuracy of the main bars 301 is within ±5mm.

[0093] S20: Repeat steps S6-S7 to complete the hoisting of the entire pile foundation reinforcement cage. After each section of reinforcement cage 3 is hoisted, inspect the installed reinforcement cage 3, including its position, verticality, and connection quality, and adjust any problems promptly. Simultaneously, temporary supports can be installed around the reinforcement cage 3 to prevent displacement or deformation during subsequent construction.

[0094] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A rebar cage fabrication device employing the short-line matching method, characterized in that: It includes a mobile end (1) and a fixed end (2). The space between the mobile end (1) and the fixed end (2) is used to tie the steel cage (3). The steel cage (3) is placed on multiple evenly distributed cylindrical rollers (4). Multiple limiting frames (5) are provided between the cylindrical rollers (4). The mobile terminal (1) includes a first base (101), a first tie beam (103) is provided on one side of the first base (101), a plurality of first main beams (102) are provided between the first base (101) and the first tie beam (103), and a first diagonal brace (104) is provided between the first tie beam (103) and the first main beam (102). The bottom of the first base (101) is movably connected to the ground.

2. The steel cage fabrication device using the short-line matching method according to claim 1, characterized in that: The fixed end (2) includes a second base (201), a second tie beam (203) is provided on one side of the second base (201), a plurality of second main beams (202) are provided between the second base (201) and the second tie beam (203), and a second diagonal brace (204) is provided between the second tie beam (203) and the second main beam (202). The bottom of the second base (201) is anchored to the ground.

3. The steel cage fabrication device using the short-line matching method according to claim 1, characterized in that: The second tie beam (203) is arranged opposite to the first tie beam (103), and the main reinforcement (301) in step S3 is placed between the second tie beam (203) and the first tie beam (103).

4. The rebar cage fabrication device using the short-line matching method according to claim 1, characterized in that: The limiting frame (5) includes a steel section (501), and multiple vertical clamps (502) are provided above the steel section (501). The vertical clamps (502) are used to limit the width of the steel cage (3). Buckles (503) are provided inside the vertical clamps (502). The buckles (503) are used to place the main reinforcement (301).

5. The rebar cage fabrication device using the short-line matching method according to claim 1, characterized in that: The steel section (501) is provided with a steel section groove (504), and the steel section groove (504) is also provided with an elongated hole. The vertical clamping plate (502) is arranged in the steel section groove (504). The bottom of the vertical clamping plate (502) is provided with a transverse bolt (505), which is used to control the transverse movement of the vertical clamping plate (502).

6. The rebar cage fabrication device using the short-line matching method according to claim 1, characterized in that: A vertical groove (506) is provided on the vertical plate (502). The main reinforcement (301) is placed in the vertical groove (506). A side plate (507) is provided on one side of the vertical groove (506). An elongated hole is provided on the side plate (507). A buckle (503) is arranged in the elongated hole and can slide up and down. The buckle (503) is used to control the height of the main reinforcement (301).

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