A steel mesh paving process for precast beams

Abstract

The application discloses a prefabricated beam steel strip net paving process and relates to the technical field of prefabricated beam production. The process comprises the following steps: S1, after the steel strip net is formed, the steel strip net is laid flat on a finished product receiving frame; a lifting appliance for grabbing the steel strip net is moved to the top of a full-length steel bar at the end of the steel strip net through hoisting equipment; S2, positioning, the lifting appliance is moved downward to a set position, and the lifting appliance is positioned through a positioning mechanism. The application has the beneficial effects that: the lifting appliance capable of automatic grabbing and the positioning mechanism for positioning the lifting appliance are arranged, the steel strip net is transferred from the finished product receiving frame to the binding table without manual intervention in the whole process, the number of workers required is reduced, and the steel bar assembling efficiency of the prefabricated beam is improved. Through improvement of the transfer mode, the paving process and the like, the paving steps are optimized, the paving efficiency of the steel strip net is improved, and ideas are provided for subsequent unmanned prefabricated beam steel bar framework production and the construction of a prefabricated beam steel bar framework assembling workshop.

Description

Technical Field

[0001] This invention relates to the field of precast beam production technology, and in particular to a precast beam steel strip mesh paving process. Background Technology

[0002] High-speed rail has become an important "Chinese calling card." In the field of precast box girders for high-speed rail, my country's overall construction level is among the world's leading. However, in the reinforcement engineering of box girders, manual binding by a high density of workers is still the main method, which has problems such as large workforce, low efficiency, high risk, and high cost. Specifically: 1) Low efficiency: It requires the most workers, has the highest labor costs, uses the most primitive technology, and has the lowest work efficiency. Generally, it takes nearly a hundred people working together to produce one beam per day. 2) Unstable binding / welding quality: Manual binding / welding results in low precision in rebar laying, inaccurate positioning, and errors in the sequence of rebar laying and binding. In addition, there are instances of missing bindings and incomplete welding, all of which will have an adverse impact on the quality of the bridge. 3) Safety hazards exist: The steel reinforcement frame manufacturing workers tie and weld the steel reinforcement in a 30m*15m area on the steel reinforcement frame platform. There is also a gantry crane above the area for transporting the steel reinforcement, which poses a great safety hazard.

[0003] 4) Significant waste: The use of manual binding results in significant waste.

[0004] Due to the harsh conditions of open-air construction, the difficulty in finding skilled workers, and the harsh and variable working environments in high-altitude, cold, and overseas construction sites, steel reinforcement production has become a key problem restricting the construction of precast box girders, making it difficult to meet the strategic needs of high-speed rail construction and development and the "going global" strategy of high-speed rail.

[0005] ① Fewer and fewer skilled workers and higher and higher labor costs: As the living standards of the Chinese people improve and the growth rate of the labor force slows down, it will become increasingly difficult to recruit suitable workers for steel frame manufacturing positions, and labor costs will gradually increase.

[0006] ② High-speed rail construction in high-altitude and cold regions: harsh environment and low efficiency in manufacturing steel reinforcement frames.

[0007] ③ Overseas projects: Shortage of skilled workers, high labor costs, difficulty in allocation, and short project timelines.

[0008] Continuous reinforcing bars play a crucial role in the tensile bearing capacity of precast box girders, resisting potential changes in the inflection point position of the frame beam during earthquakes. The manufacturing process of high-speed railway precast box girders requires a large number of continuous reinforcing bars, some reaching lengths of up to 32 meters. Currently, these bars are typically produced in steel mills and then manually transported to binding platforms. Because the bars are relatively soft and cannot be hoisted using overhead cranes, manual handling is essential. This process requires 6-8 workers, and no more than 10 bars can be moved at a time, resulting in immense labor intensity and extremely low efficiency.

[0009] After the long steel bars are transported to the binding platform, multiple people are needed to bind and install each steel bar into the designated position on the platform. The process is tedious and inefficient, and because the steel bars are too long, misalignment during binding is likely to occur.

[0010] To address the aforementioned issues, we designed a steel mesh reinforcement system, which connects several continuous steel bars using flexible steel strips. Its structure is as follows: Figure 1 As shown, this solved the problems of long steel bars being unable to be hoisted and transported and being prone to misalignment during binding, but some new problems arose during the installation of the steel strip mesh.

[0011] The initial solution involved coiling up the formed steel strip mesh before transporting it. After coiling, the mesh possessed a certain rigidity, making it less prone to deformation of the continuous reinforcing bars during hoisting and transportation, thus improving stability. However, after a period of production, it was found that while coiling prevented deformation of the continuous reinforcing bars, it was time-consuming and impractical. Firstly, coiling required considerable time. Secondly, after being transported to the binding platform, the steel strip mesh needed to be removed and unrolled. While the bottom plate mesh could be laid directly after unrolling, the web plate mesh, laid on both sides of the precast beam, required lifting with an overhead crane and then fixing it to both ends of the precast beam. The entire laying process was cumbersome and affected laying efficiency. Summary of the Invention

[0012] The purpose of this invention is to provide a precast beam steel strip mesh paving process to solve the above-mentioned problems.

[0013] The present invention achieves the above objectives through the following technical solutions: A precast beam steel strip mesh paving process includes the following steps: S1. After the steel strip mesh is formed, it is laid flat on the finished product receiving frame. Using lifting equipment, the lifting device used to grab the steel strip mesh is moved to above the continuous reinforcing bar at the end of the steel strip mesh. S2. Positioning: The spreader moves downward to the set position and is positioned by the positioning mechanism. S3. Grab the steel strip mesh; the lifting device grabs the continuous reinforcing bars at the end of the steel strip mesh. S4. Transfer: The lifting equipment is used to raise the lifting gear and steel strip net and transfer them to the binding platform. S5. Laying the steel strip mesh for the base plate: The steel strip mesh is moved above the binding platform, and then lowered until the bottom of the steel strip mesh contacts the U-shaped reinforcement on the binding platform. The continuous reinforcement at the bottom of the steel strip mesh is tied to the U-shaped reinforcement by manual binding, telescopic pin limiting, or automatic binding equipment. The lifting device moves and lowers towards the side where the steel strip mesh has not been laid until the steel strip mesh is completely laid at the bottom of the U-shaped reinforcement. The lifting device is released from the lock to separate the lifting device from the steel strip mesh. Finally, the entire steel strip mesh is tied and fixed by manual or automatic binding equipment to complete the laying of the steel strip mesh for the base plate. S6. Laying of the web steel strip mesh: Using lifting equipment, place the lifting device against one side of the binding platform, so that the steel strip mesh is attached to the side of the binding platform; fix the continuous reinforcing bars at the top of the steel strip mesh to the U-shaped bars by manual binding, telescopic pin limiting, or automatic binding equipment for initial fixation; release the lifting device to separate the lifting device from the steel strip mesh, and drive the lifting device to reset; use manual or automatic binding equipment to bind and fix the entire steel strip mesh, completing the laying of the web steel strip mesh.

[0014] As a further improvement, in S1, the lifting device includes a load-bearing frame, with several mounting brackets evenly distributed at the bottom of the load-bearing frame. Each mounting bracket includes two spaced-apart mounting rods, with a locking rod hinged to each mounting rod. A torsion spring is also installed on the hinge axis of the locking rod. A limit hole is provided on the locking rod. The load-bearing frame is provided with a drive rod arranged along the length of the load-bearing frame. The drive rod can slide along the length of the load-bearing frame. Limiting rods for limiting the locking rod are evenly distributed at the bottom of the drive rod. The limiting rod has a locking position and a releasing position in its sliding stroke. The limiting rod in the locking position is located inside the limiting hole, preventing the locking rod from rotating. The limiting rod in the releasing position is separated from the limiting hole, allowing the locking rod to rotate along its hinge axis.

[0015] As a further improvement, in S2, the positioning mechanism includes a lifting mechanism, on which a first adjusting rod and a second adjusting rod are respectively installed. The first adjusting rod and the second adjusting rod are symmetrically arranged. The first adjusting rod includes a drive shaft and a driven shaft rotatably mounted on the lifting mechanism. A connecting rod is fixedly connected to the driven shaft. A buffer rod is hinged to the other end of the connecting rod. A shock absorber is also hinged between the buffer rod and the connecting rod. The second adjusting rod has the same structure as the first adjusting rod.

[0016] As a further improvement, in S3, when grabbing the steel strip mesh, the drive rod drives the limit rod to separate from the limit hole, releasing the limit on the locking rod. When the continuous reinforcing bar at the end of the steel strip mesh is fully inserted into the mounting frame and the locking rod is reset to remain horizontal, the limit rod is engaged in the limit hole, completing the grabbing of the steel strip mesh.

[0017] As a further improvement, in S6, positioning baffles are provided on both the left and right sides of the top of the binding platform. When the lifting device is in contact with the positioning baffles, the steel strip mesh is in contact with the side of the U-shaped reinforcement.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, by setting up an automatically gripping lifting device and a positioning mechanism for positioning the lifting device, allows the steel strip mesh to be transferred from the finished product receiving rack to the binding platform without any manual intervention, reducing the number of workers required and improving the efficiency of precast beam rebar assembly. Furthermore, by improving the transfer method and laying process, the laying steps are optimized, thereby increasing the laying efficiency of the steel strip mesh and providing a framework for the construction of unmanned precast beam rebar skeleton production and assembly workshops. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of a steel strip mesh.

[0021] Figure 2 This is a side view of the finished product receiving frame of the precast beam steel strip mesh paving process described in this invention.

[0022] Figure 3 This is a top view of the finished product receiving frame of the precast beam steel strip mesh paving process described in this invention.

[0023] Figure 4 This is a side view of the positioning mechanism of the precast beam steel strip mesh paving process described in this invention.

[0024] Figure 5 This is a top view schematic diagram of the positioning mechanism for a precast beam steel strip mesh paving process described in this invention.

[0025] Figure 6 This is a schematic diagram of the main structure of the lifting device for the precast beam steel strip mesh paving process described in this invention.

[0026] Figure 7 This is a side view of the lifting device for the precast beam steel strip mesh paving process described in this invention.

[0027] Figure 8 This is a schematic diagram of the steel strip mesh paving process for a precast beam described in this invention.

[0028] The annotations in the attached figures are explained as follows: 1. Finished product receiving rack; 2. Positioning mechanism; 21. Lifting mechanism; 22. First adjusting rod; 221. Drive shaft; 222. Driven shaft; 223. Connecting rod; 224. Shock absorber; 225. Buffer rod; 23. Second adjusting rod; 3. Steel strip mesh; 4. Lifting device; 41. Load-bearing frame; 42. Drive rod; 43. Limiting rod; 44. Mounting frame; 45. Limiting hole; 46. Locking rod; 47. Cylinder; 5. Bottom plate steel strip mesh; 6. Web plate steel strip mesh; 7. Top plate steel strip mesh. Detailed Implementation

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood through the specific circumstances.

[0031] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-8 As shown, the precast beam steel strip mesh paving process includes the following steps: S1. After the steel strip mesh 3 is formed, it is laid flat on the finished product receiving frame. The lifting device 4 used to grab the steel strip mesh 3 is moved to the top of the continuous steel bar at the end of the steel strip mesh 3 by the lifting equipment. Figure 1In the middle section, the horizontal reinforcement is a continuous steel bar of steel strip mesh 3, and the longitudinal reinforcement is a flexible steel strip. Since the length of the lifting device 4 is the same as the length of the continuous steel bar, both being 32m, which is quite long, two cranes with the same rail are used to lift the lifting device 4 together. The upper surface of the finished product receiving frame is a sloping structure. In this embodiment, the lifting device 4 is moved to the top of the continuous steel bar at the highest point.

[0032] S2, Positioning: The lifting device 4 moves downward to the set position and is positioned by the positioning mechanism 2; The lifting device 4 is suspended by ropes. During movement, it sways from side to side, and the inability to fix its position is the main problem hindering automated gripping. Currently, manual assistance is used to gradually bring the lifting device 4 to a stop. Furthermore, because a non-coilable transport method is used, a large number of hooks are needed to prevent deformation of the entire steel bar due to insufficient stress points. The hooks are manually attached to the steel bar one by one, connected by ropes. Even after attachment, there is a possibility of the hooks falling off. Finally, each hook must be checked individually. The entire gripping process is not only risky but also inefficient.

[0033] By setting a positioning mechanism 2, the swinging lifting device 4 is limited and positioned, solving the problem that the position of the lifting device 4 is difficult to fix due to swing. In this embodiment, the positioning mechanism 2 includes a lifting mechanism 21. There are many types of lifting mechanisms 21. In this embodiment, a scissor lifting mechanism 21 is used. A first adjusting rod 22 and a second adjusting rod 23 are respectively installed on the lifting mechanism 21. The first adjusting rod 22 and the second adjusting rod 23 are symmetrically arranged. The first adjusting rod 22 includes a drive shaft 221 and a driven shaft 222 rotatably mounted on the lifting mechanism 21. The drive shaft 221 is connected to an external servo motor. The drive shaft 221 is connected to the driven shaft 222 through a chain, and the angle of the connecting rod 223 is adjusted by rotating the drive shaft 221. The connecting rod 223 is fixedly connected to the driven shaft 222. A buffer rod 225 is hinged to the other end of the connecting rod 223. A shock absorber 224 is also hinged between the buffer rod 225 and the connecting rod 223. The second adjusting rod 23 has the same structure as the first adjusting rod 22. The positioning mechanism 2 has at least 10 sets.

[0034] The lifting device 4 is relatively heavy, and the impact force generated during its swing is large. If it is directly limited, the damage to the positioning mechanism 2 will be very large. By setting up a connecting rod 223, a buffer rod 225 and a shock absorber 224, when the lifting device 4 collides with the buffer rod 225, the buffer rod 225 swings outward and the shock absorber 224 absorbs part of the force, thereby gradually stopping the swing of the lifting device 4 and reducing the damage to the connecting rod 223 and other components.

[0035] To reduce the number of servo motors, a long shaft is used as the drive shaft 221, which can drive multiple driven shafts 222 to rotate.

[0036] The purpose of the lifting mechanism 21 is to drive the buffer rod 225 and other components to rise when the lifting device 4 needs to be positioned, so that the buffer rod 225 positions the lifting device 4. After positioning is completed, drive the buffer rod 225 and other components to descend, so as to provide clearance for the steel strip mesh 3.

[0037] S3, grab the steel strip mesh 3, and the lifting device 4 grabs the continuous reinforcing bar at the end of the steel strip mesh 3; The lifting device 4 includes a load-bearing frame 41. In this embodiment, the load-bearing frame 41 is made of I-beams. Several mounting brackets 44 are evenly distributed at the bottom of the load-bearing frame 41. There are 25 to 30 mounting brackets 44 and corresponding components to prevent deformation of the continuous reinforcing steel due to insufficient stress points. Each mounting bracket 44 includes two spaced-apart mounting rods. A locking rod 46 is hinged to each mounting rod. A torsion spring is also installed on the hinge shaft of the locking rod 46. A limit hole 45 is provided on the locking rod 46. The load-bearing frame 41... A drive rod 42 is provided along the length of the load-bearing frame 41. The drive rod 42 can slide along the length of the load-bearing frame 41. Limiting rods 43 for limiting the locking rod 46 are evenly distributed at the bottom of the drive rod 42. The limiting rods 43 have a locking position and a releasing position in their sliding stroke. When the limiting rod 43 is in the locking position, it is located inside the limiting hole 45, so that the locking rod 46 cannot rotate. When the limiting rod 43 is in the releasing position, it is separated from the limiting hole 45, so that the locking rod 46 can rotate along its hinge axis.

[0038] By employing a double locking rod structure 46, the distance between the two mounting rods is half the diameter of a typical reinforcing bar. This ensures that if one locking rod 46 breaks, the resulting gap is insufficient to cause the entire reinforcing bar to detach, thus improving safety.

[0039] When the steel strip mesh 3 is gripped, the drive rod 42 drives the limiting rod 43 to separate from the limiting hole 45, releasing the limitation on the locking rod 46. When the continuous reinforcing bar at the end of the steel strip mesh 3 is fully inserted into the mounting frame 44 and the locking rod 46 is reset to remain horizontal, the limiting rod 43 is engaged in the limiting hole 45, completing the gripping of the steel strip mesh 3.

[0040] S4. Transfer: The lifting equipment is used to raise the lifting device 4 and the steel strip net 3 and transfer them to the binding platform. S5. The base plate steel strip mesh 5 is laid. The steel strip mesh 3 is moved above the binding platform. Then, the steel strip mesh 3 is lowered until the bottom of the steel strip mesh 3 contacts the U-shaped reinforcement on the binding platform. It is bound manually, with telescopic pins for limiting, or with automatic binding equipment (telescopic pin limiting: when the bottom of the steel strip mesh 3 contacts the U-shaped reinforcement, the telescopic pin extends to limit the continuous reinforcement at the bottom of the steel strip mesh 3. When the lifting device 4 gradually lowers and moves to the other side of the U-shaped reinforcement, the continuous reinforcement at the bottom of the steel strip mesh 3 is blocked by the telescopic pin limiting). The barrier prevents movement, thus completing the limit setting. The automatic binding equipment can use an automatic binding robot to fix the continuous reinforcing bars at the bottom of the steel strip mesh 3. The continuous reinforcing bars at the bottom of the steel strip mesh 3 are bound to the U-shaped bars. The lifting device 4 moves and descends towards the side where the steel strip mesh 3 is not laid until the steel strip mesh 3 is completely laid at the bottom of the U-shaped bars. The lifting device 4 is released from its lock, separating it from the steel strip mesh 3. Finally, the entire steel strip mesh 3 is bound and fixed manually or with automatic binding equipment to complete the laying of the base plate steel strip mesh 5. S6. Laying of the web steel strip mesh 6: Using lifting equipment, the lifting device 4 is placed against one side of the binding platform, so that the steel strip mesh 3 is attached to the side of the binding platform; the continuous steel bars at the top of the steel strip mesh 3 are fixed to the U-shaped bars by manual binding, telescopic pin limiting, or automatic binding equipment, and preliminary fixation is performed; the lifting device 4 is released from locking, so that the lifting device 4 is separated from the steel strip mesh 3, and the lifting equipment drives the lifting device 4 to reset; the entire steel strip mesh 3 is bound and fixed by manual or automatic binding equipment, and the laying of the web steel strip mesh 6 is completed.

[0041] Positioning baffles (not shown in the figure) are provided on both the left and right sides of the top of the binding platform. When the lifting device 4 is in contact with the positioning baffle, the steel strip mesh 3 is in contact with the side of the U-shaped reinforcement.

[0042] The laying principle of the top plate steel strip mesh 7 is the same as that of the bottom plate steel strip mesh 5, and will not be repeated here.

[0043] Working principle: The welded steel strip mesh 3 is placed on the finished product receiving rack 1 (in this embodiment, the finished product receiving rack 1 is located on the side of the discharge port of the steel strip mesh 3 welding equipment. The discharge position of the steel strip mesh 3 is fixed each time, so there is no need to set up a positioning structure for positioning the steel strip mesh 3). The continuous steel bar of the steel strip mesh 3 near the end of the steel strip mesh 3 welding equipment is located directly above the positioning mechanism 2.

[0044] Before the lifting device 4 grabs, the lifting mechanism 21 drives the first adjusting rod 22 and the second adjusting rod 23 to rise. When the lifting device 4 rises to the middle position of the connecting rod 223 and is flush with the continuous steel bar, the lifting mechanism 21 stops. Since the lifting device 4 is pulled by ropes, it will still swing after moving to the designated position. The driven shaft 222 is driven to rotate by the active shaft 221, which increases the angle between the two buffer rods 225 to ensure that the lifting device 4 can fall between the two buffer rods 225. As the lifting device 4 continues to descend, it will collide with the buffer rods 225 during swing. Since the force generated by the collision is relatively large, in order to reduce the damage to the connecting rod 223, servo motor and other mechanisms caused by the collision, a shock absorber 224 is also set. When the lifting device 4 collides with the buffer rod 225, the buffer rod 225 swings due to the impact. The shock absorber 224 absorbs part of the force, and the lifting device 4 gradually stops swinging until the lifting device 4 falls between the two connecting rods 223, completing the positioning of the lifting device 4.

[0045] When the lifting device 4 grabs, the cylinder 47 pushes the drive rod 42 to slide, causing the L-shaped limiting rod 43 to separate from the limiting hole 45, releasing the limitation on the locking rod 46. When the lifting device 4 descends, the locking rod 46 is blocked by the continuous steel bar and bends until the continuous steel bar is completely inside the mounting frame 44. At this time, the locking rod 46 is no longer squeezed by the continuous steel bar. The locking rod 46 is reset by the left and right sides of the torsion spring and remains horizontal. The cylinder 47 adjusts the sliding of the drive rod 42, so that the L-shaped limiting rod 43 is inserted into the limiting hole 45, completing the grabbing of the steel strip mesh 3.

[0046] Laying of the base plate steel strip mesh 5: The steel strip mesh 3 is moved to the binding platform by a crane. The steel strip mesh 3 is moved to one side of the bottom of the U-shaped reinforcement. The steel strip mesh 3 is lowered until it contacts the U-shaped reinforcement. The continuous reinforcing bars at the bottom of the steel strip mesh 3 are fixed to the U-shaped reinforcement. The lifting device 4 moves and lowers to the side where the steel strip mesh 3 is not laid. After the steel strip mesh 3 is laid flat, the lifting device 4 is released from its locking position. Since the continuous reinforcing bars have been welded to the steel strip, the position of each continuous reinforcing bar has been fixed. After the steel strip mesh 3 is laid flat at the bottom of the U-shaped reinforcement, the binding operation can be carried out. The binding efficiency and accuracy are improved.

[0047] Laying of web steel strip mesh 6: The lifting device 4 is lowered to the same level as the positioning baffle. The crane drives the lifting device 4 to move towards the positioning baffle until the lifting device 4 is in contact with the positioning baffle. The steel strip mesh 3 is laid on the side of the U-shaped reinforcement. After fixing the top continuous steel bar of the steel strip mesh 3, the lifting device 4 is released from locking and separated from the steel strip mesh 3. Then the web steel strip mesh 6 is laid.

[0048] The laying principle of the top plate steel strip mesh 7 is the same as that of the bottom plate steel strip mesh 5, and will not be repeated here.

[0049] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A precast beam steel strip mesh paving process, characterized in that, Includes the following steps: S1. After the steel strip mesh is formed, it is laid flat on the finished product receiving frame. Using lifting equipment, the lifting device used to grab the steel strip mesh is moved to above the continuous reinforcing bar at the end of the steel strip mesh. S2. Positioning: The lifting device moves downward to the set position and is positioned by the positioning mechanism. S3. Grab the steel strip mesh; the lifting device grabs the continuous reinforcing bars at the end of the steel strip mesh. S4. Transfer: The lifting equipment is used to raise the lifting gear and steel strip net and transfer them to the binding platform. S5. Laying the steel strip mesh for the base plate: The steel strip mesh is moved above the binding platform, and then lowered until the bottom of the steel strip mesh contacts the U-shaped reinforcement on the binding platform. The continuous reinforcement at the bottom of the steel strip mesh is tied to the U-shaped reinforcement by manual binding, telescopic pin limiting, or automatic binding equipment. The lifting device moves and lowers towards the side where the steel strip mesh has not been laid until the steel strip mesh is completely laid at the bottom of the U-shaped reinforcement. The lifting device is released from the lock to separate the lifting device from the steel strip mesh. Finally, the entire steel strip mesh is tied and fixed by manual or automatic binding equipment to complete the laying of the steel strip mesh for the base plate. S6. Laying of the web steel strip mesh: Using lifting equipment, place the lifting device against one side of the binding platform, so that the steel strip mesh is attached to the side of the binding platform; fix the continuous reinforcing bars at the top of the steel strip mesh to the U-shaped bars by manual binding, telescopic pin limiting, or automatic binding equipment for initial fixation; release the lifting device to separate the lifting device from the steel strip mesh, and drive the lifting device to reset; use manual or automatic binding equipment to bind and fix the entire steel strip mesh, completing the laying of the web steel strip mesh. In S1, the lifting device includes a load-bearing frame, with several mounting brackets evenly distributed at the bottom of the load-bearing frame. Each mounting bracket includes two spaced-apart mounting rods, with a locking rod hinged to each mounting rod. A torsion spring is also installed on the hinge axis of the locking rod. A limit hole is provided on the locking rod. The load-bearing frame is provided with a drive rod arranged along the length of the load-bearing frame. The drive rod can slide along the length of the load-bearing frame. Limiting rods for limiting the locking rod are evenly distributed at the bottom of the drive rod. The limiting rod has a locking position and a releasing position in its sliding stroke. The limiting rod in the locking position is located inside the limiting hole, preventing the locking rod from rotating. The limiting rod in the releasing position is separated from the limiting hole, allowing the locking rod to rotate along its hinge axis.

2. The precast beam steel mesh paving process according to claim 1, characterized in that: In S2, the positioning mechanism includes a lifting mechanism, on which a first adjusting rod and a second adjusting rod are respectively installed. The first adjusting rod and the second adjusting rod are symmetrically arranged. The first adjusting rod includes a drive shaft and a driven shaft rotatably mounted on the lifting mechanism. A connecting rod is fixedly connected to the driven shaft. A buffer rod is hinged to the other end of the connecting rod. A shock absorber is also hinged between the buffer rod and the connecting rod. The second adjusting rod has the same structure as the first adjusting rod.

3. The precast beam steel mesh paving process according to claim 1, characterized in that: In S3, when grabbing the steel strip mesh, the drive rod drives the limit rod to separate from the limit hole, releasing the limit on the locking rod. When the continuous reinforcing bar at the end of the steel strip mesh is fully inserted into the mounting frame and the locking rod is reset to remain horizontal, the limit rod is engaged in the limit hole, completing the grabbing of the steel strip mesh.

4. The precast beam steel mesh paving process according to claim 1, characterized in that: In S6, positioning baffles are provided on both the left and right sides of the top of the binding platform. When the lifting device is in contact with the positioning baffles, the steel strip mesh is in contact with the side of the U-shaped reinforcement.

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