Reinforcing cage long longitudinal reinforcement distribution system and distribution method thereof

Abstract

The application belongs to the technical field of underground continuous wall reinforcement cage building equipment, and discloses a long longitudinal reinforcement distribution system for underground continuous wall reinforcement cage and a distribution method thereof. The long longitudinal reinforcement distribution system for underground continuous wall reinforcement cage comprises a fixed arm, a main telescopic arm, a secondary telescopic arm and a blanking platform. The main telescopic arm is telescopically arranged in the fixed arm, and the secondary telescopic arm is telescopically arranged in the main telescopic arm. The main longitudinal reinforcement and the auxiliary longitudinal reinforcement are placed on the fixed arm and can be separated one by one and then transported to the blanking platform by the main telescopic arm and the secondary telescopic arm. The long longitudinal reinforcement distribution system for underground continuous wall reinforcement cage comprises at least a fully extended state and a fully contracted state. When in the fully extended state, the secondary telescopic arm is fully extended from the main telescopic arm, and the main telescopic arm is fully extended from the fixed arm. When in the fully contracted state, the main telescopic arm and the secondary telescopic arm are sequentially contracted in the fixed arm. The application realizes automatic and streamlined distribution and improves the distribution precision and stability.

Description

Technical Field

[0001] This invention relates to the field of construction equipment for underground continuous wall reinforcement cages, and in particular to a long longitudinal reinforcement placement system and method for underground continuous wall reinforcement cages. Background Technology

[0002] In existing technologies, steel mesh is a crucial component in the fabrication of diaphragm wall reinforcement cages, and its length is typically quite long, exceeding 50 meters. The fabrication of steel mesh often requires the use of long longitudinal bars for connection. However, these long longitudinal bars have relatively low rigidity and are prone to significant deformation after direct lifting, making them difficult to place in the designed position. Furthermore, due to the large number of long longitudinal bars (usually dozens), manual handling during the mesh placement process results in low placement accuracy, high labor intensity, and a high risk of misalignment between the bars. Moreover, steel mesh is usually divided into upper and lower sections, with the mesh height generally exceeding 1 meter above the ground. Workers can only handle one long longitudinal bar at a time. To ensure proper installation, the same number of workers need to stand at a height and relay the mesh assembly, which is risky and difficult to operate. Therefore, how to achieve automated, streamlined mesh placement, avoid manual labor, and improve placement accuracy and stability are problems that need to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of this invention is to provide a system and method for placing longitudinal reinforcement bars in a continuous underground wall steel cage, so as to achieve automated and streamlined placement, avoid manual labor, and improve placement accuracy and stability.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The longitudinal reinforcement placement system for diaphragm wall steel cages is used for laying the main and secondary longitudinal reinforcement bars on the transverse reinforcement bars, and includes:

[0006] The assembly includes a fixed arm, a main telescopic arm, a secondary telescopic arm, and a material unloading platform. The main telescopic arm is telescopically disposed within the fixed arm, and the secondary telescopic arm is telescopically disposed within the main telescopic arm. The main longitudinal rib and the secondary longitudinal rib are placed on the fixed arm and can be separated one by one and transported to the material unloading platform via the main telescopic arm and the secondary telescopic arm.

[0007] The longitudinal reinforcement placement system of the underground continuous wall steel cage includes at least a fully extended state and a fully retracted state. In the fully extended state, the secondary telescopic arm extends fully from the main telescopic arm, and the main telescopic arm extends fully from the fixed arm. In the fully retracted state, the main telescopic arm and the secondary telescopic arm retract sequentially into the fixed arm.

[0008] Optionally, it also includes a lifting device located below the fixed arm, which can raise the height of the fixed arm, the main telescopic arm and the secondary telescopic arm, so that the height difference between them and the unloading platform gradually increases.

[0009] Optionally, it also includes a counterweight connected to the fixed arm.

[0010] Optionally, a separation device is provided at the connection between the fixed arm and the main telescopic arm, which can separate two adjacent main longitudinal bars or two adjacent secondary longitudinal bars.

[0011] Optionally, a first lever is provided at the connection between the fixed arm and the main telescopic arm, which can guide a single main longitudinal rib or a single secondary longitudinal rib from the fixed arm to the main telescopic arm.

[0012] Optionally, a second lever is provided at the connection between the main telescopic arm and the secondary telescopic arm, which can guide a single main longitudinal rib or a single secondary longitudinal rib from the main telescopic arm to the secondary telescopic arm.

[0013] Optionally, a material dropping device is provided at the end of the secondary telescopic arm away from the main telescopic arm, which can guide a single main longitudinal rib or a single secondary longitudinal rib from the secondary telescopic arm to the material dropping platform.

[0014] Optionally, the fixed arm is provided with a first transmission chain, the main telescopic arm is provided with a second transmission chain, and the secondary telescopic arm is provided with a third transmission chain. The first transmission chain, the second transmission chain, and the third transmission chain are all used to support and transport the main longitudinal reinforcement or the secondary longitudinal reinforcement.

[0015] Optionally, both the second and third transmission chains are provided with a number of partitions at intervals, and adjacent main longitudinal ribs or secondary longitudinal ribs can be separated by the partitions.

[0016] On the other hand, the method for placing the longitudinal reinforcement bars of the underground diaphragm wall steel cage includes the following steps:

[0017] S1. Make the longitudinal reinforcement system of the underground continuous wall steel cage fully contracted, place several secondary longitudinal reinforcements at one end of the fixed arm near the main telescopic arm, and then place the same number of main longitudinal reinforcements as the secondary longitudinal reinforcements at the other end of the fixed arm.

[0018] S2. The main telescopic boom and the secondary telescopic boom extend out of the fixed boom in sequence until the longitudinal reinforcement laying system of the underground continuous wall steel cage is fully extended. Then the secondary telescopic boom and the main telescopic boom gradually retract in sequence and transport all the secondary longitudinal reinforcements to the material dropping platform in sequence, so that each pair of secondary longitudinal reinforcements is placed at a preset interval until the longitudinal reinforcement laying system of the underground continuous wall steel cage is fully retracted.

[0019] S3. Repeat step S2 to transport all the main longitudinal bars to the unloading platform in sequence, and place the main longitudinal bars and secondary longitudinal bars one by one to complete the production of the lower mesh.

[0020] S4. After lifting the lifting device of the longitudinal reinforcement placement system of the underground continuous wall steel cage, repeat step S1 to place the main longitudinal reinforcement and secondary longitudinal reinforcement.

[0021] S5. Repeat steps S2-S3 until all main longitudinal bars and all secondary longitudinal bars are placed in their corresponding positions to complete the fabrication of the wire mesh.

[0022] S6. Lower the lifting device to its original state to complete the storage of the longitudinal reinforcement bar placement system of the underground continuous wall steel cage.

[0023] The beneficial effects of this invention are:

[0024] The longitudinal reinforcement placement system for diaphragm wall steel cages in this invention includes a fixed arm, a main telescopic arm, a secondary telescopic arm, and a dropping platform. The main telescopic arm is telescopically mounted within the fixed arm, and the secondary telescopic arm is telescopically mounted within the main telescopic arm, thereby achieving the telescopic effect of the entire placement system. Specifically, the longitudinal reinforcement placement system for diaphragm wall steel cages includes at least a fully extended state and a fully retracted state. In the fully extended state, the secondary telescopic arm extends fully from the main telescopic arm, and the main telescopic arm extends fully from the fixed arm. In the fully retracted state, the main telescopic arm and the secondary telescopic arm retract sequentially into the fixed arm. This not only reduces the space occupied in non-operating states and improves space utilization, but also enables the transformation of the longitudinal reinforcement from an aggregated to a discrete state through the transition between the fully extended and fully retracted states. Specifically, the main and secondary longitudinal reinforcements can be placed on the fixed arm and can be separated one by one to achieve the transformation from an aggregated to a discrete state. Then, they are transported by the main and secondary telescopic arms and dropped onto the dropping platform, thereby achieving efficient and high-precision fabrication of the steel mesh. On the other hand, the long longitudinal reinforcement placement system for underground continuous wall steel cages can also realize automated and streamlined placement operations, avoiding excessive manpower and effectively improving placement accuracy and stability. Attached Figure Description

[0025] Figure 1 This refers to the placement position of the longitudinal reinforcement in the underground continuous wall steel cage longitudinal reinforcement placement system described in this embodiment of the invention.

[0026] Figure 2 This is a top view schematic diagram of the longitudinal reinforcement bar placement system for underground continuous wall steel cages according to an embodiment of the present invention in use.

[0027] Figure 3 This is a front view schematic diagram of the longitudinal reinforcement bar placement system for underground continuous wall steel cages according to an embodiment of the present invention in use.

[0028] Figure 4 This is a front view of the longitudinal reinforcement bar placement system of the underground continuous wall steel cage described in the embodiment of the present invention in its fully extended state;

[0029] Figure 5 This is a top view of the underground continuous wall steel cage longitudinal reinforcement placement system in a fully extended state, as described in this embodiment of the invention.

[0030] Figure 6 This is a front view of the longitudinal reinforcement bar placement system of the underground continuous wall steel cage described in the embodiment of the present invention in a fully contracted state;

[0031] Figure 7 This is a top view of the underground continuous wall steel cage longitudinal reinforcement placement system in a fully contracted state, as described in this embodiment of the invention.

[0032] Figure 8 This is a partial cross-sectional schematic diagram of the longitudinal reinforcement placement system for the underground continuous wall steel cage according to an embodiment of the present invention;

[0033] Figure 9 This is a front view schematic diagram of the connection between the fixed arm and the main telescopic arm in the longitudinal reinforcement laying system of the underground continuous wall steel cage according to an embodiment of the present invention.

[0034] Figure 10 This is a top view of the connection between the fixed arm and the main telescopic arm in the longitudinal reinforcement bar placement system of the underground continuous wall steel cage according to an embodiment of the present invention.

[0035] Figure 11 This is a cross-sectional schematic diagram of the connection between the fixed arm and the main telescopic arm in the longitudinal reinforcement laying system of the underground continuous wall steel cage according to an embodiment of the present invention.

[0036] Figure 12 This is a schematic diagram of the separation device in an inactive state in the longitudinal reinforcement bar placement system of the underground continuous wall steel cage according to an embodiment of the present invention.

[0037] Figure 13 This is a schematic diagram of the separation device in operation in the longitudinal reinforcement laying system of the underground continuous wall steel cage according to an embodiment of the present invention;

[0038] Figure 14 This is a schematic diagram of the first lever in the working state of the longitudinal reinforcement bar placement system for underground continuous wall steel cages according to an embodiment of the present invention;

[0039] Figure 15 This is a front view schematic diagram of the connection between the main telescopic arm and the secondary telescopic arm in the longitudinal reinforcement laying system of the underground continuous wall steel cage according to an embodiment of the present invention.

[0040] Figure 16 This is a top view of the connection between the main telescopic arm and the secondary telescopic arm in the longitudinal reinforcement laying system of the underground continuous wall steel cage described in this embodiment of the invention.

[0041] Figure 17 This is a cross-sectional schematic diagram of the connection between the main telescopic arm and the secondary telescopic arm in the longitudinal reinforcement laying system of the underground continuous wall steel cage described in the embodiment of the present invention.

[0042] Figure 18 This is a front view schematic diagram of the material dropping device in the longitudinal reinforcement bar placement system of the underground continuous wall steel cage according to an embodiment of the present invention;

[0043] Figure 19 This is a top view schematic diagram of the material dropping device in the longitudinal reinforcement bar placement system of the underground continuous wall steel cage according to an embodiment of the present invention;

[0044] Figure 20 This is a schematic diagram of the lifting device in the longitudinal reinforcement bar placement system of the underground continuous wall steel cage described in this embodiment of the invention.

[0045] Figure 21 This is a schematic diagram of step S1 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0046] Figure 22 This is a schematic diagram of step S2 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0047] Figure 23 This is a schematic diagram of step S2 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0048] Figure 24 This is a schematic diagram of step S3 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0049] Figure 25 This is a schematic diagram of step S4 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0050] Figure 26 This is a schematic diagram of step S4 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0051] Figure 27This is a schematic diagram of step S5 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0052] Figure 28 This is a schematic diagram of step S6 in the method for placing the longitudinal reinforcement of the underground continuous wall steel cage according to an embodiment of the present invention;

[0053] Figure 29 This is a schematic diagram of the partition plate in the longitudinal reinforcement system of the underground continuous wall steel cage according to an embodiment of the present invention;

[0054] Figure 30 This is a schematic diagram of transporting the secondary longitudinal reinforcement bars to be placed in the long longitudinal reinforcement bar placement system of the underground continuous wall steel cage according to an embodiment of the present invention;

[0055] Figure 31 This is a schematic diagram of transporting the placed secondary longitudinal bars in the longitudinal bar placement system of the underground continuous wall steel cage according to an embodiment of the present invention.

[0056] In the picture:

[0057] 100 - Longitudinal reinforcement bar placement system for underground continuous wall steel cage; 200 - Horizontal reinforcement; 300 - Main longitudinal reinforcement; 400 - Secondary longitudinal reinforcement; 501 - Lower mesh; 502 - Upper mesh; 101 - Wire splicing area; 102 - Transportation area; 103 - Dropping area;

[0058] 10-Fixed boom; 20-Main telescopic boom; 30-Secondary telescopic boom; 40-Lifting device; 50-Counterweight; 60-Unloading platform;

[0059] 11-Fixed arm main board; 12-First connecting plate; 13-First transmission chain; 14-Separation device; 15-First lever; 16-First bearing;

[0060] 21-Main telescopic boom main board; 22-Second connecting plate; 23-Second transmission chain; 24-First driver; 25-Second lever; 26-Second bearing;

[0061] 31 - Secondary telescopic arm main board; 32 - Third connecting plate; 33 - Third transmission chain; 34 - Second driver; 35 - Unloading device;

[0062] 101 - Partition; 401 - Secondary longitudinal reinforcement already placed; 402 - Secondary longitudinal reinforcement to be placed. Detailed Implementation

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In existing technologies, steel mesh is a crucial component in the fabrication of diaphragm wall reinforcement cages, and its length is typically over 50 meters. Long longitudinal bars are often used for connection during mesh fabrication; however, these bars have relatively low rigidity and deform significantly upon lifting, making them difficult to position correctly. Furthermore, the large number of long longitudinal bars (usually dozens) during placement necessitates manual handling, resulting in low placement accuracy, high labor intensity, and potential misalignment of bar spacing. Additionally, steel mesh is typically divided into upper and lower sections, with the mesh height exceeding 1 meter above ground. Workers can only handle one long longitudinal bar at a time, requiring a number of workers to stand at a height and relay the mesh assembly, which is risky and difficult to operate. Therefore, achieving automated, streamlined mesh placement to avoid manual labor and improve placement accuracy and stability is a problem that needs to be solved by those in the field.

[0067] Example 1

[0068] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0069] like Figures 1-28As shown, this embodiment provides a longitudinal reinforcement laying system for a diaphragm wall reinforcement cage, used for laying the main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400 on the transverse reinforcement 200. It includes a fixed arm 10, a main telescopic arm 20, a secondary telescopic arm 30, and a dropping platform 60. The main telescopic arm 20 is telescopically disposed within the fixed arm 10, and the secondary telescopic arm 30 is telescopically disposed within the main telescopic arm 20. The main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400 are placed on the fixed arm 10 and can be separated one by one and transported to the dropping platform 60 via the main telescopic arm 20 and the secondary telescopic arm 30. The longitudinal reinforcement laying system for the diaphragm wall reinforcement cage includes at least a fully extended state and a fully retracted state. In the fully extended state, the secondary telescopic arm 30 extends fully from the main telescopic arm 20, and the main telescopic arm 20 extends fully from the fixed arm 10. In the fully retracted state, the main telescopic arm 20 and the secondary telescopic arm 30 retract sequentially into the fixed arm 10.

[0070] On the other hand, the method for placing the longitudinal reinforcement bars of the underground diaphragm wall steel cage includes the following steps:

[0071] S1. Make the longitudinal reinforcement system of the underground continuous wall steel cage fully contracted, place several secondary longitudinal reinforcements 400 at one end of the fixed arm 10 near the main telescopic arm 20, and then place the same number of main longitudinal reinforcements 300 as the secondary longitudinal reinforcements 400 at the other end of the fixed arm 10.

[0072] S2, the main telescopic arm 20 and the secondary telescopic arm 30 extend sequentially from the fixed arm 10 until the long longitudinal reinforcement laying system of the underground continuous wall steel cage is in a fully extended state. Then the secondary telescopic arm 30 and the main telescopic arm 20 gradually retract sequentially and transport all the secondary longitudinal reinforcements 400 to the unloading platform 60 in sequence, so that every two secondary longitudinal reinforcements 400 are placed at a preset interval until the long longitudinal reinforcement laying system of the underground continuous wall steel cage is in a fully retracted state.

[0073] S3. Repeat step S2 to transport all the main longitudinal ribs 300 to the unloading platform 60 in sequence, and place the main longitudinal ribs 300 and the secondary longitudinal ribs 400 in a one-to-one correspondence to complete the production of the lower mesh 501.

[0074] S4. After lifting the lifting device 40 of the underground continuous wall steel cage longitudinal reinforcement placement system, repeat step S1 to place the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400.

[0075] S5. Repeat steps S2-S3 until all main longitudinal bars 300 and all secondary longitudinal bars 400 are placed in a corresponding manner to complete the fabrication of the wire mesh 502.

[0076] S6. Lower the lifting device 40 to its original state to complete the storage of the longitudinal reinforcement bar placement system of the underground continuous wall steel cage.

[0077] Specifically, in this embodiment, the longitudinal reinforcement placement system 100 for the diaphragm wall steel cage includes a fixed arm 10, a main telescopic arm 20, a secondary telescopic arm 30, and a dropping platform 60. The main telescopic arm 20 is telescopically disposed within the fixed arm 10, and the secondary telescopic arm 30 is telescopically disposed within the main telescopic arm 20, thereby achieving the telescopic effect of the entire placement system. Specifically, the longitudinal reinforcement placement system 100 for the diaphragm wall steel cage includes at least a fully extended state and a fully retracted state. When in the fully extended state, the secondary telescopic arm 30 extends fully from the main telescopic arm 20, and the main telescopic arm 20 extends fully from the fixed arm 10. When in the fully retracted state, the main telescopic arm 20 and the secondary telescopic arm 30 retract sequentially into the fixed arm 10. This not only reduces the space occupied in the non-operating state and improves space utilization, but also enables the transformation of the longitudinal reinforcement from an aggregated state to a discrete state through the switching between the fully extended and fully retracted states. Specifically, the main longitudinal bars 300 and secondary longitudinal bars 400 can be placed on the fixed arm 10 and can be separated one by one to achieve the transformation from an aggregated state to a discrete state. Then, they are transported by the main telescopic arm 20 and the secondary telescopic arm 30 and fall onto the material dropping platform 60, thereby achieving efficient and high-precision production of the steel mesh. On the other hand, the material placement method of the longitudinal bar placement system for underground continuous wall steel cages can also realize automated and streamlined material placement operations, avoiding excessive manpower and effectively improving the placement accuracy and stability.

[0078] The specific structure of the longitudinal reinforcement placement system for the underground continuous wall reinforcement cage in this embodiment will be described below.

[0079] like Figure 1 As shown, in the prior art, horizontal reinforcing bars 200 are usually placed first, followed by main longitudinal reinforcing bars 300 and secondary longitudinal reinforcing bars 400 in sequence. Welding equipment is used to spot weld the main longitudinal reinforcing bars 300, secondary longitudinal reinforcing bars 400, and horizontal reinforcing bars 200 at their intersections, thereby fixing them to the horizontal reinforcing bars 200. For example, the main longitudinal reinforcing bars 300 and secondary longitudinal reinforcing bars 400 are arranged one-to-one to ensure the stable erection of the reinforcing cage, thus achieving the stability of the diaphragm wall. Optionally, in this embodiment, the reinforcing cage is composed of several connected reinforcing mesh panels, including a lower mesh panel 501 and an upper mesh panel 502. In this embodiment, both the lower mesh panel 501 and the upper mesh panel 502 are provided with horizontal reinforcing bars 200, main longitudinal reinforcing bars 300, and secondary longitudinal reinforcing bars 400, and the three are arranged and connected in the same way. For example, the length of the reinforcing mesh panel exceeds 50m, the width is 6m, and the height difference between the upper mesh panel 502 and the lower mesh panel 501 exceeds 1m.

[0080] like Figure 2As shown, in this embodiment, the longitudinal reinforcement laying system 100 for the diaphragm wall steel cage is mainly used to lay the main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400 on the transverse reinforcement 200. Optionally, the construction site can be divided into three areas: a splicing area 101, a transportation area 102, and a dropping area 103. This allows for segmented operation of the main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400, which not only automates the laying process but also ensures accurate placement. For example, in this embodiment, four longitudinal reinforcement laying systems 100 for the diaphragm wall steel cage are provided, arranged in parallel and spaced intervals, to provide better support for the main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400, ensuring their stability during placement, transportation, and dropping. Optionally, other quantities can be used in other embodiments, which will not be elaborated here.

[0081] In this embodiment, both the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400 are made of standard-length steel bars. Specifically, the standard-length steel bars are generally 12m long. At the splicing area 101, the workers install connecting sleeves at both ends of the standard steel bars and use a manual splicing machine to string several standard steel bars together until they form a long steel bar exceeding 50m. This is how the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400 are made. Then, the made main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400 are placed on the long longitudinal reinforcement laying system 100 of the underground continuous wall steel cage for transportation.

[0082] Combination Figures 3-8As shown, the longitudinal reinforcement placement system 100 for the underground continuous wall steel cage in this embodiment includes a fixed arm 10, a main telescopic arm 20, a secondary telescopic arm 30, a lifting device 40, a counterweight 50, and a dropping platform 60. Optionally, the main telescopic arm 20 is telescopically disposed within the fixed arm 10, and the secondary telescopic arm 30 is telescopically disposed within the main telescopic arm 20. In this embodiment, the main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400 are placed on the fixed arm 10 and can be separated one by one and transported to the dropping platform 60 by the telescopic effect of the main telescopic arm 20 and the secondary telescopic arm 30, so as to complete the fabrication of the steel mesh. The lifting device 40 and the counterweight 50 are both disposed below the fixed arm 10 and connected to the fixed arm 10. Specifically, the lifting device 40 can raise the height of the fixed arm 10, the main telescopic arm 20, and the secondary telescopic arm 30, gradually increasing the height difference between them and the unloading platform 60 until it reaches the same height as the top mesh 502 of the steel mesh. This allows for the simultaneous fabrication of both the lower mesh 501 and the top mesh 502 of the steel mesh. Furthermore, the counterweight 50 connected to the fixed arm 10 maintains the stability of the fixed arm 10 during the lifting process of the lifting device 40, preventing the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400 from slipping due to swaying. It also prevents safety issues such as the entire system tilting during the extension and retraction of the main telescopic arm 20 and the secondary telescopic arm 30. Optionally, the unloading platform 60 is placed on the ground, with its top surface lower than the lower surfaces of the main telescopic arm 20 and the secondary telescopic arm 30, thus avoiding interference with the extension and retraction movements of the main telescopic arm 20 and the secondary telescopic arm 30.

[0083] Specifically, in this embodiment, the longitudinal reinforcement placement system 100 for the underground continuous wall steel cage includes at least a fully extended state and a fully retracted state. For example... Figure 4 and Figure 5 As shown, when the longitudinal reinforcement bar placement system 100 of the diaphragm wall reinforcement cage is fully extended, the secondary telescopic boom 30 is fully extended from the main telescopic boom 20, and the main telescopic boom 20 is fully extended from the fixed boom 10, thereby enabling the main longitudinal reinforcement bar 300 and the secondary longitudinal reinforcement bar 400 to be transported to the unloading platform 60. Combined with... Figure 2 As shown, when the longitudinal reinforcement bar placement system 100 of the diaphragm wall reinforcement cage is fully extended, the fixed arm 10 is located in the wire splicing area 101, the main telescopic arm 20 is located in the transport area 102, and the secondary telescopic arm 30 is located in the unloading area 103. This allows the main longitudinal reinforcement bar 300 and the secondary longitudinal reinforcement bar 400 to be transferred from the wire splicing area 101 to the unloading area 103, enabling unloading operations on the unloading platform 60. Figure 6 and Figure 7As shown, further, when the diaphragm wall reinforcement cage longitudinal reinforcement placement system 100 is in a fully retracted state, the main telescopic arm 20 and the secondary telescopic arm 30 are retracted into the fixed arm 10, thereby achieving effective storage of the entire device and reducing the floor space occupied when not in use. Further, during the transition from a fully retracted state to a fully extended state, the diaphragm wall reinforcement cage longitudinal reinforcement placement system 100 can gradually transport the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400 to the top of the dropping platform 60; during the transition from a fully extended state to a fully retracted state, the diaphragm wall reinforcement cage longitudinal reinforcement placement system 100 can sequentially guide and transport the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400 on the secondary telescopic arm 30 to the dropping platform 60 until all longitudinal reinforcements are placed, and simultaneously retract the secondary telescopic arm 30 and the main telescopic arm 20 into the fixed arm 10. Specifically, by switching between its fully retracted and fully extended states, the device can achieve efficient operation of retracting, feeding, and dropping materials simultaneously. This not only effectively replaces manual labor to achieve automated and streamlined material placement, but also ensures accurate placement of longitudinal ribs, improves material placement precision, saves equipment storage space, and has high production efficiency and low operating costs.

[0084] like Figures 9-14 As shown, the fixed arm 10 includes a fixed arm main board 11, a first connecting plate 12 and a first transmission chain 13, and the fixed arm 10 is provided with a separation device 14, a first lever 15 and a first bearing 16.

[0085] Specifically, two of each of the fixed arm main plate 11, the first transmission chain 13, the separation device 14, the first lever 15, and the first bearing 16 are provided, and each is located on both sides of the first connecting plate 12. Figure 10 As shown, in this embodiment, the two fixed arm main boards 11 are connected by a first connecting plate 12, and the two fixed arm main boards 11 are symmetrically arranged. Each fixed arm main board 11 is provided with a first transmission chain 13, a separation device 14, a first lever 15, and a first bearing 16. Optionally, the first transmission chain 13 and the first connecting plate 12 are both used to support the main longitudinal rib 300 and the secondary longitudinal rib 400, and the first transmission chain 13 can drive the main longitudinal rib 300 or the secondary longitudinal rib 400 to move synchronously to realize the transportation of the two.

[0086] like Figures 12-14As shown, furthermore, both the separating device 14 and the first lever 15 are disposed at the connection between the fixed arm 10 and the main telescopic arm 20. Thus, the separating device 14 can separate two adjacent main longitudinal ribs 300 or two adjacent secondary longitudinal ribs 400, transforming the aggregated main longitudinal ribs 300 or secondary longitudinal ribs 400 into a discrete state, facilitating the subsequent guiding and precise placement of individual longitudinal ribs. Optionally, the separating device 14 includes a cylinder and a stop lever. In this embodiment, the extended end of the stop lever is configured as a plane on one side and an inclined plane on the other side along the vertical direction, with the inclined plane facing the main telescopic arm 20. For example, a first sensor is provided on one end of the fixed arm 10 near the main telescopic arm 20. When the foremost main longitudinal rib 300 or secondary longitudinal rib 400 moves to the first sensor, the separation device 14 can receive a signal to drive the cylinder to operate. The cylinder can extend the stop bar so that its extended end pushes out from bottom to top. With its inclined surface, the foremost longitudinal rib can be pushed forward, while the rear longitudinal rib is blocked so that it cannot move forward, thereby achieving the effect of converting the longitudinal rib from an aggregated state to a discrete state.

[0087] Furthermore, the first lever 15 is rotatably mounted on the main plate 11 of the fixed arm, and the first lever 15 is provided with an arc-shaped groove, the arc angle of which is adapted to the outer diameter of the longitudinal rib. For example, the first lever 15 is provided at the connection between the fixed arm 10 and the main telescopic arm 20. The first lever 15 can guide a single main longitudinal rib 300 or a single secondary longitudinal rib 400 from the fixed arm 10 to the main telescopic arm 20. Specifically, after the separating device 14 divides the foremost longitudinal rib, the first lever 15 begins to rotate, and the rotation direction is towards the main telescopic arm 20, so that the longitudinal rib can abut against the arc-shaped groove. Thus, the first lever 15 can push the longitudinal rib to guide it to the main telescopic arm 20, thereby completing the transport of the foremost main longitudinal rib 300 or secondary longitudinal rib 400 on the fixed arm 10 and the main telescopic arm 20. Furthermore, the cylinder drives the stop lever to retract, allowing the subsequent main longitudinal rib 300 or secondary longitudinal rib 400 to move forward under the action of the first transmission chain 13 until the second main longitudinal rib 300 or secondary longitudinal rib 400 reaches the first sensing position. The stop lever then extends again to repeat the above process, so as to realize the single transport of all longitudinal ribs on the fixed arm 10 and the main telescopic arm 20, and complete the transformation of the longitudinal ribs from an aggregated state to a discrete state.

[0088] Combination Figure 11 and Figures 15-17 As shown, the main telescopic arm 20 includes a main telescopic arm main board 21, a second connecting plate 22, and a second transmission chain 23. The main telescopic arm 20 also includes a first driver 24, a second lever 25, and a second bearing 26. Specifically, the first bearing 16 is located between the fixed arm 10 and the main telescopic arm 20, and the two are connected through the first bearing 16, thereby ensuring smooth relative movement between the fixed arm 10 and the main telescopic arm 20. Figure 16As shown, similarly, the second bearing 26 is disposed between the main telescopic arm 20 and the secondary telescopic arm 30, and the two are connected by the second bearing 26, thereby ensuring smooth relative movement between the main telescopic arm 20 and the secondary telescopic arm 30. Figure 10 and Figure 11 As shown, specifically, the first driver 24 includes a drive motor, a gear, and a rack. In this embodiment, the drive motor and the gear are both mounted on the fixed arm 10, and the rack is mounted on the main telescopic arm 20. Thus, under the drive of the first driver 24, the main telescopic arm 20 can achieve a rolling effect inside the fixed arm 10, thereby realizing the telescopic function of the main telescopic arm 20.

[0089] like Figure 16 As shown, two main telescopic arm main plates 21, two second transmission chains 23, two first drivers 24, two second levers 25, and two second bearings 26 are provided, and are symmetrically arranged on both sides of the second connecting plate 22. Optionally, in this embodiment, the two main telescopic arm main plates 21 are connected through the second connecting plate 22, and the two main telescopic arm main plates 21 are symmetrically arranged. Each main telescopic arm main plate 21 is provided with a second transmission chain 23, a first driver 24, a second lever 25, and a second bearing 26. Optionally, the second transmission chain 23 and the second connecting plate 22 are both used to support the main longitudinal rib 300 and the secondary longitudinal rib 400, and the second transmission chain 23 can drive the main longitudinal rib 300 or the secondary longitudinal rib 400 to move synchronously to realize the transportation of the two. Further, the second lever 25 is rotatably mounted on the main telescopic arm main plate 21, and the second lever 25 is provided with an arc-shaped groove, the arc angle of which is adapted to the outer diameter of the longitudinal rib. For example, the second lever 25 is disposed at the connection between the main telescopic arm 20 and the secondary telescopic arm 30, and the second lever 25 can guide a single main longitudinal rib 300 or a single secondary longitudinal rib 400 from the main telescopic arm 20 to the secondary telescopic arm 30. Specifically, a second sensor is provided at one end of the main telescopic arm main plate 21 near the secondary telescopic arm 30. When the main longitudinal rib 300 or the secondary longitudinal rib 400 reaches the second sensor, the second lever 25 starts to rotate, and the rotation direction is towards the secondary telescopic arm 30, so that the longitudinal rib can abut against the arc-shaped groove. In this way, the second lever 25 can push the longitudinal rib to guide it to the secondary telescopic arm 30, thereby completing the transport of the main longitudinal rib 300 or the secondary longitudinal rib 400 on the main telescopic arm 20 and the secondary telescopic arm 30. Then the above process is repeated to achieve the single transport of all longitudinal ribs on the main telescopic arm 20 and the secondary telescopic arm 30, and to maintain the discrete state of the longitudinal ribs.

[0090] like Figure 18 and Figure 19 As shown, the secondary telescopic boom 30 includes a secondary telescopic boom main board 31, a third connecting plate 32, and a third transmission chain 33. The secondary telescopic boom 30 also includes a second driver 34 and a material unloading device 35. Combined with... Figure 17As shown, similarly, the second driver 34 includes a drive motor, a gear, and a rack. In this embodiment, the drive motor and gear are both mounted on the main telescopic arm 20, and the rack is mounted on the secondary telescopic arm 30. Thus, under the drive of the second driver 34, the secondary telescopic arm 30 can achieve a rolling effect within the main telescopic arm 20, thereby realizing the telescopic function of the secondary telescopic arm 30. Combined with... Figure 19 As shown, two secondary telescopic arm main boards 31, a third transmission chain 33, a second driver 34, and a material unloading device 35 are each provided, and they are symmetrically arranged on both sides of the third connecting plate 32. Optionally, in this embodiment, the two secondary telescopic arm main boards 31 are connected through the third connecting plate 32, and the two secondary telescopic arm main boards 31 are symmetrically arranged. Each secondary telescopic arm main board 31 is provided with a third transmission chain 33, a second driver 34, and a material unloading device 35. Optionally, the third transmission chain 33 and the third connecting plate 32 are both used to support the main longitudinal ribs 300 and the secondary longitudinal ribs 400, and the third transmission chain 33 can drive the main longitudinal ribs 300 or the secondary longitudinal ribs 400 to move synchronously to realize the transportation of the two. Thus, the first transmission chain 13, the second transmission chain 23, and the third transmission chain 33 are all used to support and transport the main longitudinal ribs 300 or the secondary longitudinal ribs 400, thereby ensuring the stable transportation of all longitudinal ribs.

[0091] like Figure 18 As shown, a material dropping device 35 is provided at the end of the secondary telescopic arm 30 away from the main telescopic arm 20. The material dropping device 35 can guide a single main longitudinal rib 300 or a single secondary longitudinal rib 400 from the secondary telescopic arm 30 to the material dropping platform 60, thereby realizing the material dropping operation of the longitudinal rib. Specifically, the material dropping device 35 is configured with an L-shaped structure and is rotatably connected to the main board 31 of the secondary telescopic arm. In this embodiment, a third sensor is provided at the end of the main board 31 of the secondary telescopic arm away from the main telescopic arm 20. When a single main longitudinal rib 300 or a single secondary longitudinal rib 400 reaches the third sensor, the material dropping device 35 rotates to the side of the longitudinal rib and guides it to the material dropping platform 60. For example, by adjusting the operating time of the separation device 14 and the material dropping device 35, the interval between every two main longitudinal ribs 300 or every two secondary longitudinal ribs 400 is 5m. In other embodiments, the interval between two longitudinal ribs can also be ensured by the first lever 15, the second lever 25, etc. Accordingly, the interval can be determined as needed, and is not limited here.

[0092] The following is a detailed description of the placement method of the longitudinal reinforcement placement system for the underground continuous wall steel cage in this embodiment.

[0093] like Figures 20-28 As shown, the method for placing the longitudinal reinforcement bars of the underground diaphragm wall steel cage includes the following steps:

[0094] S1. Make the longitudinal reinforcement bar placement system 100 of the underground continuous wall steel cage fully contracted, place several secondary longitudinal bars 400 at one end of the fixed arm 10 near the main telescopic arm 20, and then place the same number of main longitudinal bars 300 as the secondary longitudinal bars 400 at the other end of the fixed arm 10.

[0095] S2. The main telescopic boom 20 and the secondary telescopic boom 30 extend sequentially from the fixed boom 10 until the long longitudinal reinforcement laying system 100 of the underground continuous wall steel cage is fully extended. Then the secondary telescopic boom 30 and the main telescopic boom 20 gradually retract sequentially and transport all the secondary longitudinal reinforcements 400 to the unloading platform 60 in sequence, so that every two secondary longitudinal reinforcements 400 are placed at a preset interval until the long longitudinal reinforcement laying system of the underground continuous wall steel cage is fully retracted.

[0096] S3. Repeat step S2 to transport all the main longitudinal ribs 300 to the unloading platform 60 in sequence, and place the main longitudinal ribs 300 and the secondary longitudinal ribs 400 in a one-to-one correspondence to complete the production of the lower mesh 501.

[0097] S4. Lifting device 40 of the underground continuous wall steel cage longitudinal reinforcement placement system 100, and repeat step S1 to place the main longitudinal reinforcement 300 and secondary longitudinal reinforcement 400.

[0098] S5. Repeat steps S2-S3 until all main longitudinal bars 300 and all secondary longitudinal bars 400 are placed in a corresponding manner to complete the fabrication of the wire mesh 502.

[0099] S6. Lower the lifting device 40 to its original state to complete the storage of the longitudinal reinforcement bar placement system for the underground continuous wall steel cage.

[0100] Specifically, in step S2, when the foremost secondary longitudinal rib 400 moves to the first sensing position, the separating device 14 receives a signal, causing its protruding end to push upwards, pushing the foremost secondary longitudinal rib 400 forward and blocking the rear secondary longitudinal ribs 400 from moving forward, thereby achieving the effect of converting the aggregated state of the secondary longitudinal ribs 400 into a discrete state. Further, after the separating device 14 separates the foremost secondary longitudinal rib 400, after the foremost secondary longitudinal rib 400 moves a certain distance, the first lever 15 starts to rotate, and the rotation direction is towards the main telescopic arm 20, pushing the secondary longitudinal rib 400 to guide it onto the main telescopic arm 20, thus completing the transport of the foremost secondary longitudinal rib 400 on the fixed arm 10 and the main telescopic arm 20. Further, when the second secondary longitudinal rib 400 reaches the first sensing position, the above steps are repeated, thereby achieving the single transport of all secondary longitudinal ribs 400 on the fixed arm 10 and the main telescopic arm 20, and completing the conversion of the longitudinal ribs from an aggregated state to a discrete state.

[0101] Similarly, when the secondary longitudinal rib 400 reaches the second sensing point, the second lever 25 begins to rotate towards the secondary telescopic arm 30, allowing the secondary longitudinal rib 400 to abut against the arc-shaped groove. The second lever 25 then pushes the secondary longitudinal rib 400 to guide it onto the secondary telescopic arm 30, thus completing the transport of the secondary longitudinal rib 400 on the main telescopic arm 20 and the secondary telescopic arm 30. This process is repeated to achieve single transport of all secondary longitudinal ribs 400 on the main telescopic arm 20 and the secondary telescopic arm 30, maintaining the discrete state of the longitudinal ribs. Likewise, when a single secondary longitudinal rib 400 reaches the third sensing point, the unloading device 35 rotates to the side of the secondary longitudinal rib 400 and guides it onto the unloading platform 60. For example, by adjusting the operating time of the separating device 14 and the unloading device 35, the interval between every two secondary longitudinal ribs 400 is 5m. In other embodiments, the interval between two secondary longitudinal ribs 400 can also be ensured by the first lever 15, the second lever 25, etc. Accordingly, the interval can be determined as needed, and is not limited here.

[0102] Similarly, the main longitudinal reinforcement 300 can be placed in step S3 in the same manner as described above. Specifically, the main longitudinal reinforcement 300 is placed on one side of the secondary longitudinal reinforcement 400 and abuts against the secondary longitudinal reinforcement 400. Further, after step S6, the main longitudinal reinforcement 300 and the secondary longitudinal reinforcement 400 are spot-welded together using welding equipment to ensure the stability of their connection.

[0103] Example 2

[0104] This embodiment provides a longitudinal reinforcement placement system for a diaphragm wall steel cage, wherein components identical or corresponding to those in Embodiment 1 are labeled with the same reference numerals as in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The differences are as follows:

[0105] Combination Figure 3 and Figures 29-31 As shown, in this embodiment, several partitions 101 are spaced apart on both the second transmission chain 23 and the third transmission chain 33. During the transport of the main longitudinal ribs 300 and secondary longitudinal ribs 400, each adjacent pair of main longitudinal ribs 300 or secondary longitudinal ribs 400 can be separated by the partitions 101. Furthermore, the partitions 101 can move synchronously with the second transmission chain 23 or the third transmission chain 33, thereby separating the main longitudinal ribs 300 and secondary longitudinal ribs 400 in real time and avoiding problems such as entanglement. Figure 30 and Figure 31As shown, exemplarily, the partition 101 on the second transmission chain 23 can guide the secondary longitudinal rib 402 transported from the fixed arm 10 to the empty space on the main telescopic arm 20, thus placing it alternately with other placed secondary longitudinal ribs 401. Specifically, during rotation, the second transmission chain 23 can rotate the empty space between the partitions 101 to below the first lever 15, thereby accurately guiding the secondary longitudinal rib 402 to the empty space and achieving stable transport. Similarly, the partition 101 on the third transmission chain 33 can guide the secondary longitudinal rib 402 transported from the main telescopic arm 20 to the empty space on the secondary telescopic arm 30, thus placing it alternately with other placed secondary longitudinal ribs 401. Specifically, during rotation, the third transmission chain 33 can rotate the empty space between the partitions 101 to below the second lever 25, thereby accurately guiding the secondary longitudinal rib 402 to the empty space and achieving stable transport. Furthermore, the above method is also used to ensure stable transport on the main telescopic boom 20 and the secondary telescopic boom 30 when transporting the main longitudinal reinforcement 300.

[0106] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. 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 claims of the present invention.

Claims

1. A longitudinal reinforcement laying system for a diaphragm wall steel cage, used for laying the main longitudinal reinforcement (300) and secondary longitudinal reinforcement (400) on the transverse reinforcement (200), characterized in that, include: The assembly includes a fixed arm (10), a main telescopic arm (20), a secondary telescopic arm (30), and a material unloading platform (60). The main telescopic arm (20) is telescopically disposed within the fixed arm (10), and the secondary telescopic arm (30) is telescopically disposed within the main telescopic arm (20). The main longitudinal rib (300) and the secondary longitudinal rib (400) are placed on the fixed arm (10) and can be separated one by one and transported to the material unloading platform (60) via the main telescopic arm (20) and the secondary telescopic arm (30). The longitudinal reinforcement bar placement system of the underground continuous wall steel cage includes at least a fully extended state and a fully retracted state. When in the fully extended state, the secondary telescopic arm (30) is fully extended from the main telescopic arm (20), and the main telescopic arm (20) is fully extended from the fixed arm (10). When in the fully retracted state, the main telescopic arm (20) and the secondary telescopic arm (30) are retracted into the fixed arm (10) in sequence. A separation device (14) is provided at the connection between the fixed arm (10) and the main telescopic arm (20). The separation device (14) can separate two adjacent main longitudinal ribs (300) or two adjacent secondary longitudinal ribs (400). A first lever (15) is provided at the connection between the fixed arm (10) and the main telescopic arm (20). The first lever (15) can guide a single main longitudinal rib (300) or a single secondary longitudinal rib (400) from the fixed arm (10) to the main telescopic arm (20). The secondary telescopic arm (30) is provided with a material dropping device (35) at one end away from the main telescopic arm (20). The material dropping device (35) can guide a single main longitudinal rib (300) or a single secondary longitudinal rib (400) from the secondary telescopic arm (30) to the material dropping platform (60).

2. The longitudinal reinforcement placement system for underground continuous wall steel cages according to claim 1, characterized in that, It also includes a lifting device (40), which is located below the fixed arm (10) and can raise the height of the fixed arm (10), the main telescopic arm (20) and the secondary telescopic arm (30), so that the height difference between the fixed arm (10), the main telescopic arm (20) and the secondary telescopic arm (30) and the unloading platform (60) gradually increases.

3. The longitudinal reinforcement placement system for underground continuous wall steel cages according to claim 1, characterized in that, It also includes a counterweight (50) connected to the fixed arm (10).

4. The longitudinal reinforcement placement system for the underground continuous wall steel cage according to claim 1, characterized in that, A second lever (25) is provided at the connection between the main telescopic arm (20) and the secondary telescopic arm (30). The second lever (25) can guide a single main longitudinal rib (300) or a single secondary longitudinal rib (400) from the main telescopic arm (20) to the secondary telescopic arm (30).

5. The longitudinal reinforcement placement system for underground continuous wall steel cages according to claim 1, characterized in that, The fixed arm (10) is provided with a first transmission chain (13), the main telescopic arm (20) is provided with a second transmission chain (23), and the secondary telescopic arm (30) is provided with a third transmission chain (33). The first transmission chain (13), the second transmission chain (23) and the third transmission chain (33) are all used to support and transport the main longitudinal reinforcement (300) or the secondary longitudinal reinforcement (400).

6. The longitudinal reinforcement placement system for the underground continuous wall steel cage according to claim 5, characterized in that, Both the second transmission chain (23) and the third transmission chain (33) are provided with a number of partitions (101) at intervals, and two adjacent main longitudinal ribs (300) or secondary longitudinal ribs (400) can be separated by the partitions (101).

7. The method for placing the longitudinal reinforcement bars of the diaphragm wall steel cage according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Make the longitudinal reinforcement system of the underground continuous wall steel cage fully contracted, place a number of secondary longitudinal reinforcements (400) on one end of the fixed arm (10) near the main telescopic arm (20), and place the same number of main longitudinal reinforcements (300) as the secondary longitudinal reinforcements (400) on the other end of the fixed arm (10). S2. The main telescopic arm (20) and the secondary telescopic arm (30) extend out of the fixed arm (10) in sequence until the longitudinal reinforcement laying system of the underground continuous wall steel cage is fully extended. Then the secondary telescopic arm (30) and the main telescopic arm (20) gradually retract in sequence and transport all the secondary longitudinal reinforcements (400) to the unloading platform (60) in sequence, so that every two secondary longitudinal reinforcements (400) are placed at a preset interval until the longitudinal reinforcement laying system of the underground continuous wall steel cage is fully retracted. S3. Repeat step S2 to transport all the main longitudinal bars (300) to the unloading platform (60) in sequence, and place the main longitudinal bars (300) and secondary longitudinal bars (400) in a corresponding manner to complete the production of the lower mesh (501). S4. After lifting the lifting device (40) of the underground continuous wall steel cage longitudinal reinforcement placement system, repeat step S1 to place the main longitudinal reinforcement (300) and secondary longitudinal reinforcement (400). S5. Repeat steps S2-S3 until all main longitudinal bars (300) and all secondary longitudinal bars (400) are placed in corresponding order to complete the fabrication of the mesh sheet (502); S6. Lower the lifting device (40) to its original state to complete the storage of the longitudinal reinforcement bar placement system of the underground continuous wall steel cage.

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