Foundation pit slope protection steel mesh construction system and construction method thereof

Abstract

The application discloses a foundation pit slope protection steel mesh construction system and a construction method. The foundation pit slope protection steel mesh construction system comprises a lower steel mesh, an upper steel mesh hingedly connected with the upper side of the lower steel mesh, a supporting steel bar, a steel mesh positioning assembly used for positioning the lower steel mesh to the surface of the slope, and a steel mesh processing unit. By adopting the single-side hinged mesh connecting structure, the flexibility of the mesh itself is utilized, and the supporting steel bars are additionally arranged between the meshes. The technical effect that the double-layer steel mesh combination can be pre-assembled is realized, the original construction process is simplified, and the construction efficiency is improved. In addition, by selectively welding the upper steel mesh to the free end of the supporting steel bar at an arbitrary height, the spacing between the meshes can be adjusted, the stability and firmness between the two are ensured through the mesh hinging, manual correction of the slope flatness is not needed, and the construction requirements of the flatness can also be met.

Description

Technical Field

[0001] This invention belongs to the field of foundation pit slope protection technology, and more specifically, relates to a foundation pit slope protection steel mesh construction system and its construction method. Background Technology

[0002] Reinforcing mesh is a building material used to reinforce concrete structures, commonly used for strengthening and reinforcing concrete slabs and other components. In foundation pit slopes, reinforcing mesh is often used in conjunction with shotcrete for support, increasing slope strength and preventing rainwater erosion that could lead to slope collapse. Reinforcing mesh is generally installed after the foundation pit excavation and finishing are complete. Simultaneously, steelworkers must perform binding operations on the slope surface. Because soil slopes cannot be exposed for extended periods, they must be closed within 24 hours, limiting the excavation progress. When using double-layer reinforcing mesh, the upper layer is laid after the lower layer is covered with concrete, slowing down construction. During foundation pit slope excavation, to ensure slope flatness, manual trimming is required after mechanical trimming, further slowing down construction. Shotcrete application can easily cause concrete accumulation at the bottom of the slope, resulting in poor appearance quality of the slope retaining wall. Therefore, proposing a construction method for steel mesh reinforcement in foundation pit slope protection that meets the requirements of on-site prefabricated and modular installation, improves construction efficiency, and ensures aesthetic quality is of great significance for foundation pit slope protection projects.

[0003] To address the aforementioned technical problems, Chinese Utility Model Patent CN218150962U discloses a double-layer steel mesh structure, comprising steel mesh I, steel mesh II, and a base plate. Steel mesh I and steel mesh II are connected, arranged vertically with a gap between them. The base plate is positioned at the center of either steel mesh I or steel mesh II, and has through holes for anchor bolts to pass through. This utility model utilizes a prefabricated double-layer steel mesh with a base plate to reinforce the rock mass and quickly install prestressed anchor bolts for repairing localized collapses or large rockfalls at the tunnel face, ensuring the safety of tunnel excavation and support. Furthermore, Chinese Invention Patent CN104863370A discloses a technology for the integral forming and rapid assembly of steel mesh. This technology consists of two parts: the integral forming technology for steel mesh and the rapid assembly technology for the integrally formed steel mesh. Specialized rebar production equipment rolls rebars of different directions and diameters into a single, integral rebar mesh during the steel production stage, ensuring that the centerlines of the rebars in both directions are on the same plane. Threads are created on the rebars around the mesh, and rebar connectors are installed on these threaded rebars. The integrally formed rebar mesh is then quickly assembled on-site using bolts via these load-bearing rebar connectors. This invention effectively reduces rebar usage, optimizes structural design, lowers energy consumption and environmental pollution, reduces rebar work time and labor intensity, and improves work efficiency, thereby enhancing the specialization and industrialization of rebar engineering.

[0004] The existing technology still has the following improvements: (1) The steel mesh is arranged in a combination of parallel steel meshes. Due to the consideration of firmness and stability, the spacing between the meshes is usually small. Therefore, before laying it to the slope of the foundation pit, the slope needs to be manually leveled and then the steel mesh is laid to meet the flatness requirements of the construction. This method can increase the spacing between the steel meshes as much as possible while ensuring the firmness and stability of the steel meshes. This allows the lower steel mesh to adapt to the uneven construction environment of the slope by its own flexibility, and prevents the upper steel mesh from contacting the slope protrusions. Ultimately, it achieves the technical requirement of completing the leveling construction without manual adjustment of the slope flatness; (2) The positioning method of the steel meshes to the slope surface can be optimized, thereby achieving high efficiency and labor saving; (3) The degree of automation of steel mesh processing should be increased as much as possible to improve processing efficiency and quality. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a construction system and method for reinforcing mesh in foundation pit slope protection. By employing a single-sided hinged mesh connection structure, utilizing the inherent flexibility of the mesh, and adding supporting reinforcing bars between the mesh sections, it not only achieves the technical effect of pre-assembling the double-layer reinforcing mesh combination, simplifying the original construction process and improving construction efficiency, but also ensures adjustable spacing between the mesh sections by selectively welding the upper reinforcing mesh to any height at the free end of the supporting reinforcing bars. Furthermore, the hinged connection on the upper side of the upper and lower mesh sections ensures stability and firmness between them, effectively eliminating the need for manual correction of slope flatness. The pre-assembled mesh assembly can be directly placed on the slope surface, and the flexibility of the lower reinforcing mesh itself can adapt to convex slope conditions. Because the height between the upper and lower reinforcing meshes is adjusted, the upper reinforcing mesh does not come into contact with convex conditions. Once the concrete pouring covers the upper reinforcing mesh, the flatness construction requirements are met. To achieve the above technical effects, according to the first aspect of this invention, a reinforcing mesh construction system for foundation pit slope protection includes:

[0006] The lower steel mesh, the upper steel mesh hinged to the upper side of the lower steel mesh, the supporting steel bars provided between the lower steel mesh and the lower steel mesh, the steel mesh positioning assembly for positioning the lower steel mesh to the slope surface, and the steel mesh processing unit for processing the steel mesh;

[0007] The lower steel mesh includes lower transverse steel bars and lower vertical steel bars arranged at equal intervals and fixed perpendicularly to each other, and a steel bar hinge at the upper end of the lower vertical steel bars;

[0008] The upper steel mesh includes upper horizontal steel bars and upper vertical steel bars arranged at equal intervals and fixed perpendicularly to each other, and steel bar hinge rods fixedly connected to the upper ends of the upper vertical steel bars;

[0009] The supporting steel bar includes supporting snap-fit ​​parts at both ends and free ends for adjusting the support height;

[0010] The steel mesh positioning assembly includes a rod body, a hammering part, a snap-fit ​​part, and an insertion rod respectively located at the upper, middle, and lower ends of the rod body;

[0011] The lower and upper steel meshes are processed by the steel mesh processing unit. The lower and upper steel meshes are rotatably connected by the steel mesh hinge and the steel mesh hinge rod. The lower and upper steel meshes are relatively fixedly connected by the supporting steel bars. The mesh group is positioned on the slope surface by the steel mesh positioning component.

[0012] Preferably, the lower reinforcing mesh and the upper reinforcing mesh further include:

[0013] A bend in the first vertical reinforcing bar is provided on the lower vertical reinforcing bar;

[0014] A second vertical reinforcing bar bend is set on the upper vertical reinforcing bar.

[0015] Preferably, the steel mesh processing unit includes:

[0016] Lower rack; upper rack located above the lower rack;

[0017] The feeding assembly is fixedly installed on the upper surface of the lower frame; the node welding unit is fixedly connected to the upper frame; the transverse steel bar cutting unit is installed between the lower frame and the upper frame;

[0018] The vertical steel bars are transported to the steel mesh processing unit via the feeding assembly. The horizontal steel bars are placed on top of the vertical steel bars via the horizontal steel bar cutting unit. The welding is completed at the intersection of the vertical and horizontal steel bars via the node welding unit. The angle is formed in the vertical steel bars via the angle forming unit.

[0019] Preferably, the node welding unit includes:

[0020] The system includes a limiting light rod fixedly connected to the upper frame, a transmission screw parallel to the limiting light rod and rotatably connected to the upper frame, a movable bearing block that is slidably connected to the limiting light rod and the transmission screw respectively, a bearing block drive motor that drives the transmission screw to rotate, an angle adjustment motor that keeps the output shaft horizontal and is located below the movable bearing block, a welding robotic arm fixedly connected to the output shaft of the angle adjustment motor, and a welding manipulator located at the end of the welding robotic arm.

[0021] Preferably, the transverse steel bar cutting unit includes:

[0022] The material storage area is formed by the inclined side plate and the vertical side plate fixedly connected to the upper frame; the material preparation area is located at the lower end of the material storage area; the lower buffer part is located at the lower end of the material preparation area; and the single-rib material preparation unit is fixedly installed on the side wall of the material preparation area.

[0023] The transverse steel bars are placed in the storage area, and a single transverse steel bar in the storage area is placed in the pre-discharge area through a single-bar preparation unit. The transverse steel bars are then lowered smoothly with the assistance of the buffer section below.

[0024] Preferably, the single-rib preparation unit includes:

[0025] The housing is fixedly connected to the outer wall of the pre-discharge area; the material preparation drive motor is fixedly connected to the inside of the housing; the material preparation drive gear is fixedly connected to the output shaft of the material preparation drive motor; the upper rack and lower rack are respectively meshed with the upper and lower sides of the material preparation drive gear for horizontal transmission; and the upper clamp and lower clamp are respectively connected to the side of the upper rack and lower rack near the pre-discharge area.

[0026] A slot is provided in the pre-feeding area for sliding with the upper and lower clamping rods.

[0027] Preferably, the corner forming unit includes:

[0028] An angle bending die assembly fixedly connected to the upper frame, and an angle bending stamping unit disposed on the lower frame;

[0029] The angle-bending mold assembly includes a pressure block fixedly connected to the upper frame and a mold head disposed on the lower surface of the pressure block;

[0030] The angled stamping unit includes a stamping drive motor fixedly connected to the lower frame, a first drive link fixedly connected to the stamping drive motor on the same axis, a second drive link rotatably connected to the other end of the first drive link, a third drive link and a fourth drive link rotatably connected to the other end of the second drive link, a fifth drive link rotatably connected to the other end of the fourth drive link, and a stamping head hinged to the other end of the fifth drive link; the stamping head is slidably connected to a slide groove vertically disposed on the lower frame, and the left end of the third drive link is hinged to the lower frame.

[0031] Preferably, the lower horizontal reinforcing bars, lower vertical reinforcing bars, upper horizontal reinforcing bars, and upper vertical reinforcing bars are made of 6mm to 10mm round steel, the spacing between adjacent parallel reinforcing bars is 150mm to 250mm, and the length of the lower vertical reinforcing bars and the upper vertical reinforcing bars is greater than 300mm.

[0032] According to a second aspect of the present invention, a construction method for a foundation pit slope protection steel mesh construction system includes the following steps:

[0033] S100: Based on the construction design requirements, a sufficient amount of steel mesh is prefabricated using a steel mesh processing unit, and a foundation pit is excavated at the construction site.

[0034] S200: The lower steel mesh is rotatably connected to the upper steel mesh through the steel mesh hinge joint and the steel mesh hinge rod. The lower steel mesh is fixed between the lower steel mesh and the upper steel mesh using the supporting steel bars. The height between the lower steel mesh and the upper steel mesh is adjusted according to the flatness of the slope during on-site construction, thereby completing the installation of the steel mesh assembly.

[0035] S300: Transport the steel mesh assembly to the construction site and use a steel mesh positioning component to position the steel mesh assembly on the surface of the foundation pit slope;

[0036] S400: Pour concrete into the steel mesh and submerge it, and complete the installation of the mesh and the pouring of concrete within 24 hours to complete the support construction of the foundation pit slope.

[0037] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0038] 1. The present invention provides a construction system for reinforced steel mesh for foundation pit slope protection. By adopting a single-sided hinged mesh connection structure and utilizing the flexibility of the mesh itself, and by adding supporting steel bars between the meshes, it not only achieves the technical effect of pre-assembling double-layer reinforced steel mesh, simplifying the original construction process and improving construction efficiency, but also ensures that the spacing between the meshes is adjustable by selectively welding the upper steel mesh to any height of the free end of the supporting steel bars. Furthermore, the hinged connection on the upper side of the upper and lower meshes also ensures the stability and firmness between them. This effectively achieves the goal of placing the pre-assembled mesh assembly directly on the slope surface without the need for manual correction of the slope flatness. The flexibility of the lower steel mesh itself can adapt to the convex conditions of the slope, and the height between the upper and lower steel meshes is adjusted so that the upper steel mesh does not come into contact with the convex conditions. When the concrete is poured over the upper steel mesh, the construction requirements for flatness are met.

[0039] 2. The present invention provides a construction system for reinforced steel mesh for foundation pit slope protection. By adding vertical steel bar bends to the vertical steel bars, it not only plays an anti-slip role when facing the mass production and stacking of steel mesh during the production stage, but also plays an auxiliary positioning role on the construction site by inserting the steel bar bends into the slope surface. In addition, when pouring concrete onto the foundation pit slope surface, the steel bar bends can also enhance the adhesion between the steel mesh and the concrete, thereby improving the construction quality. Attached Figure Description

[0040] Figure 1This is a schematic diagram of the overall structure of the lower steel mesh of a foundation pit slope protection steel mesh construction system according to an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the overall structure of the upper steel mesh of a foundation pit slope protection steel mesh construction system according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the supporting steel reinforcement structure of a steel mesh construction system for foundation pit slope protection according to an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the steel mesh positioning component structure of a steel mesh construction system for foundation pit slope protection according to an embodiment of the present invention;

[0044] Figure 5 This invention provides an example of an angle-braced mesh assembly structure for a foundation pit slope protection steel mesh construction system.

[0045] Figure 6 This is a schematic diagram of the construction status of a steel mesh construction system for foundation pit slope protection according to an embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the steel mesh processing unit structure of a foundation pit slope protection steel mesh construction system according to an embodiment of the present invention;

[0047] Figure 8 A is a partial enlarged view A of the steel mesh processing unit of a foundation pit slope protection steel mesh construction system according to an embodiment of the present invention;

[0048] Figure 9 This is a partial enlarged view (B) of the steel mesh processing unit of a steel mesh construction system for foundation pit slope protection according to an embodiment of the present invention;

[0049] Figure 10 This is a flowchart illustrating the construction method of a steel mesh construction system for foundation pit slope protection, according to an embodiment of the present invention.

[0050] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-lower reinforcing mesh, 110-lower transverse reinforcing bars, 120-lower vertical reinforcing bars, 121-first vertical reinforcing bar bend, 122-reinforcing bar hinge, 2-upper reinforcing mesh, 210-upper transverse reinforcing bars, 220-upper vertical reinforcing bars, 221-second vertical reinforcing bar bend, 230-reinforcing bar hinge rod, 3-supporting reinforcing bars, 301-supporting snap-fit, 302-free end, 4-steel 400-Ribbon mesh positioning assembly, 401-Hammering part, 402-Snap-fit ​​part, 403-Insertion rod, 5-Ribbon mesh processing unit, 501-Lower frame, 502-Upper frame, 510-Feeding assembly, 511-First feeding part, 512-Second feeding part, 513-Third feeding part, 520-Node welding unit, 521-Moving bearing block, 522-Limiting light rod, 523-Transmission screw, 524-Angle adjustment motor, 525-Welding robotic arm. 526-Welding robot, 530-Horizontal rebar unloading unit, 531-Storage area, 5311-Slanted side plate, 5312-Vertical side plate, 532-Preparation unloading area, 533-Lower buffer section, 534-Single rebar preparation unit, 5341-Shell, 5342-Preparation drive motor, 5343-Preparation drive gear, 5344-Lower rack section, 5345-Upper rack section, 5346-Upper clamping rod, 5347-Lower clamping rod, 540-Angle forming 541-Angle mold assembly, 5411-Pressure block, 5412-Mold head, 542-Angle stamping unit, 5421-Motor positioning block, 5422-Stamping drive motor, 5423-First drive link, 5424-Second drive link, 5425-Third drive link, 5426-Fourth drive link, 5427-Fifth drive link, 5428-Stamping head, 5429-Slide groove, 6-Vertical reinforcement, 7-Horizontal reinforcement, 8-Slope. Detailed Implementation

[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 the present invention and simplifying the description, and are not intended to 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 limiting the present invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0055] like Figures 1-9 As shown in the embodiment of the present invention, a foundation pit slope protection steel mesh construction system includes:

[0056] 1. Lower steel mesh; 2. Upper steel mesh hinged to the upper side of the lower steel mesh; 3. Supporting steel bar between the lower steel mesh and the lower steel mesh; 4. Steel mesh positioning assembly for positioning the lower steel mesh to the slope surface; 5. Steel mesh processing unit for processing the steel mesh.

[0057] The lower steel mesh 1 includes lower transverse steel bars 110 and lower vertical steel bars 120 arranged at equal intervals and fixed perpendicularly to each other, and a steel bar hinge portion 122 provided at the upper end of the lower vertical steel bars 120.

[0058] The upper steel mesh 2 includes upper horizontal steel bars 210 and upper vertical steel bars 220 arranged at equal intervals and fixed perpendicularly to each other, and steel bar hinge rods 230 fixedly connected to the upper ends of the upper vertical steel bars.

[0059] The supporting steel bar 3 includes a supporting snap-fit ​​portion 301 at both ends and a free end 302 for adjusting the supporting height;

[0060] The steel mesh positioning component 4 includes a rod body 400, a hammering part 401, a snapping part 402, and an insertion rod 403 respectively disposed at the upper end, middle part, and lower end of the rod body 400;

[0061] The lower steel mesh 1 and the upper steel mesh 2 are processed by the steel mesh processing unit 5. The lower steel mesh 1 and the upper steel mesh 2 are rotatably connected by the steel mesh hinge part 122 and the steel mesh hinge rod 230. The lower steel mesh 1 and the upper steel mesh 2 are relatively fixedly connected by the supporting steel bar 3. The mesh group is positioned on the slope surface by the steel mesh positioning component 4.

[0062] In this embodiment of the invention, by adopting a single-sided hinged mesh connection structure, utilizing the flexibility of the mesh itself, and by adding supporting steel bars between the meshes, not only is the technical effect of pre-assembling the double-layer steel mesh combination achieved, simplifying the original construction process and improving construction efficiency, but also by selectively welding the upper steel mesh to any height at the free end of the supporting steel bar, the spacing between the meshes is ensured to be adjustable. Furthermore, due to the hinged connection on the upper side of the upper and lower meshes, the stability and firmness between the two are also guaranteed. This effectively achieves the goal of placing the pre-assembled mesh assembly directly on the slope surface without the need for manual correction of the slope flatness. The flexibility of the lower steel mesh itself can adapt to the convex conditions of the slope, and because the height between the upper and lower steel meshes is adjusted, the upper steel mesh can be kept out of contact with the convex conditions. Once the concrete is poured and covers the upper steel mesh, the construction requirements for flatness are met.

[0063] The working principle of this invention is as follows: First, according to the construction design requirements, a sufficient amount of steel mesh is prefabricated using the steel mesh processing unit 5, and a foundation pit is excavated at the construction site. Next, the lower steel mesh 1 and the upper steel mesh 2 are rotatably connected via the steel mesh hinge 122 and the steel mesh hinge rod 230, and the supporting steel bars 3 are used to fix the lower steel mesh 1 and the upper steel mesh 2 between them. The height between the lower steel mesh 1 and the upper steel mesh 2 is adjusted according to the flatness of the slope during construction, thus completing the installation of the steel mesh assembly. Next, the steel mesh assembly is transported to the construction site, and the steel mesh positioning component 4 is used to position the steel mesh assembly on the surface of the foundation pit slope. Then, concrete is poured onto the steel mesh, ensuring it covers the steel mesh, and the mesh installation and concrete pouring are completed within 24 hours, thus completing the foundation pit slope support construction.

[0064] like Figure 1 As shown, in this embodiment of the invention, the lower reinforcing mesh 1 and the upper reinforcing mesh 2 further include:

[0065] A first vertical reinforcing bar bend 121 is provided on the lower vertical reinforcing bar 120;

[0066] A second vertical reinforcing bar bend 221 is provided on the upper vertical reinforcing bar 220.

[0067] In this embodiment of the invention, by adding vertical steel bar bends to the vertical steel bars, not only can they play an anti-slip role when facing the mass production and stacking of steel mesh during the production stage, but they can also play an auxiliary positioning role on the construction site by inserting the steel bar bends into the slope surface. In addition, when pouring concrete onto the surface of the foundation pit slope, the steel bar bends can also enhance the adhesion between the steel mesh and the concrete, thereby improving the construction quality.

[0068] like Figure 7 As shown, in this embodiment of the invention, the steel mesh processing unit 5 includes:

[0069] Lower frame 501, upper frame 502 located above the lower frame 501;

[0070] The feeding assembly 510 is fixedly installed on the upper surface of the lower frame 501, the node welding unit 520 is fixedly connected to the upper frame 502, the transverse steel bar cutting unit 530 is fixedly installed on the upper surface of the lower frame 501, and the angle forming unit 540 is provided between the lower frame 501 and the upper frame 502.

[0071] The vertical steel bar 6 is transported to the steel mesh processing unit 5 through the feeding assembly 510. The horizontal steel bar 7 is placed above the vertical steel bar 6 through the horizontal steel bar unloading unit 530. The welding is completed at the intersection of the vertical steel bar 6 and the horizontal steel bar 7 through the node welding unit 520. The angle is processed in the vertical steel bar 6 through the angle forming unit 540.

[0072] like Figure 7 As shown in the embodiment of this invention, the node welding unit 520 includes:

[0073] The system includes a limiting light rod 522 horizontally fixedly connected to the upper frame 502, a transmission screw 523 parallel to the limiting light rod 522 and rotatably connected to the upper frame 502, a movable support block 521 that is slidably connected to the limiting light rod 522 and the transmission screw 523 respectively, a support block drive motor that drives the transmission screw 523 to rotate, an angle adjustment motor 524 that keeps the output shaft horizontal and is located below the movable support block 521, a welding robotic arm 525 fixedly connected to the output shaft of the angle adjustment motor 524, and a welding manipulator 526 located at the end of the welding robotic arm 525.

[0074] like Figure 7 and Figure 8 As shown, in this embodiment of the invention, the transverse steel bar cutting unit 530 includes:

[0075] The storage area 531 is formed by the inclined side plate 5311 and the vertical side plate 5312 fixedly connected to the upper frame 502; the pre-discharge area 532 is located at the lower end of the storage area 531; the lower buffer part 533 is located at the lower end of the pre-discharge area 532; and the single-ribbed material preparation unit 534 is fixedly installed on the side wall of the pre-discharge area 532.

[0076] By placing the transverse steel bar 7 in the storage area 531, and placing the single transverse steel bar 7 in the storage area 531 into the pre-discharge area 532 through the single-bar preparation unit 534, and assisting the smooth lowering of the transverse steel bar 7 through the lower buffer part 533.

[0077] like Figure 8 As shown, in this embodiment of the invention, the single-rib preparation unit 534 includes:

[0078] The package consists of a housing 5341 fixedly connected to the outer wall of the pre-feeding area 532, a pre-feeding drive motor 5342 fixedly connected to the inside of the housing 5341, a pre-feeding drive gear 5343 fixedly connected to the output shaft of the pre-feeding drive motor 5342, an upper rack portion 5345 and a lower rack portion 5344 that mesh with the upper and lower sides of the pre-feeding drive gear 5343 for horizontal transmission, and an upper clamping rod 5346 and a lower clamping rod 5347 that are connected to the upper rack portion 5345 and the lower rack portion 5344 on the side near the pre-feeding area 532, respectively.

[0079] An insertion port is provided in the pre-feeding area 532 for sliding with the upper clamp 5346 and the lower clamp 5347.

[0080] like Figure 7 and Figure 9 As shown, in this embodiment of the invention, the angle forming unit 540 includes:

[0081] An angle bending die assembly 541 fixedly connected to the upper frame 502, and an angle bending stamping unit 542 disposed on the lower frame 501;

[0082] The angle-folding mold assembly 541 includes a pressure block 5411 fixedly connected to the upper frame 502 and a mold head disposed on the lower surface of the pressure block 5411;

[0083] The angled stamping unit 542 includes a stamping drive motor 5422 fixedly connected to the lower frame 501, a first drive link 5423 fixedly connected to the stamping drive motor 5422 on the same axis, a second drive link 5424 rotatably connected to the other end of the first drive link 5423, a third drive link 5425 and a fourth drive link 5426 rotatably connected to the other end of the second drive link 5424, a fifth drive link 5427 rotatably connected to the other end of the fourth drive link 5426, and a stamping head 5428 hinged to the other end of the fifth drive link 5427; the stamping head 5428 is slidably connected to a slide groove 5429 vertically disposed on the lower frame 501, and the left end of the third drive link 5425 is hinged to the lower frame 501.

[0084] like Figures 1-6 As shown, in this embodiment of the invention, the lower horizontal reinforcing bar 110, the lower vertical reinforcing bar 120, the upper horizontal reinforcing bar 210 and the upper vertical reinforcing bar 220 are made of 6mm to 10mm round steel, and the spacing between adjacent reinforcing bars arranged in parallel is 150mm to 250mm. The lengths of the lower vertical reinforcing bar 120 and the upper vertical reinforcing bar 220 are greater than 300mm.

[0085] like Figure 10 As shown in the embodiment of the present invention, the construction method of the foundation pit slope protection steel mesh construction system includes:

[0086] S100, according to the construction design requirements, use steel mesh processing unit 5 to prefabricate a sufficient amount of steel mesh, and excavate the foundation pit at the construction site;

[0087] S200: The lower steel mesh 1 and the upper steel mesh 2 are rotatably connected by the steel bar hinge 122 and the steel bar hinge rod 230, and the supporting steel bar 3 is fixedly supported between the lower steel mesh 1 and the upper steel mesh 2. The height between the lower steel mesh 1 and the upper steel mesh 2 is adjusted according to the flatness of the slope surface during on-site construction, thereby completing the installation of the steel mesh assembly.

[0088] S300: Transport the steel mesh assembly to the construction site and use the steel mesh positioning component 4 to position the steel mesh assembly on the surface of the foundation pit slope;

[0089] S400: Pour concrete into the steel mesh and submerge it, and complete the installation of the mesh and the pouring of concrete within 24 hours to complete the support construction of the foundation pit slope.

[0090] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A construction system for reinforced steel mesh for foundation pit slope protection, characterized in that, include; The lower steel mesh (1), the upper steel mesh (2) hinged to the upper side of the lower steel mesh (1), the supporting steel bar (3) provided between the lower steel mesh (1) and the lower steel mesh (1), the steel mesh positioning component (4) for positioning the lower steel mesh (1) to the slope surface, and the steel mesh processing unit (5) for processing the steel mesh. The lower steel mesh (1) includes lower horizontal steel bars (110) and lower vertical steel bars (120) arranged at equal intervals and fixed perpendicularly to each other, and a steel bar hinge (122) provided at the upper end of the lower vertical steel bars (120). The upper steel mesh (2) includes upper horizontal steel bars (210) arranged at equal intervals and fixed perpendicularly to each other, upper vertical steel bars (220), and steel bar hinge rods (230) fixedly connected to the upper ends of the upper vertical steel bars. The supporting steel bar (3) includes a supporting snap-fit ​​part (301) provided at both ends and a free end (302) for adjusting the supporting height. The steel mesh positioning assembly (4) includes a rod (400), a hammering part (401), a snap-fit ​​part (402), and an insertion rod (403) respectively located at the upper end, middle and lower end of the rod (400). The lower steel mesh (1) and the upper steel mesh (2) are processed by the steel mesh processing unit (5). The lower steel mesh (1) and the upper steel mesh (2) are rotatably connected by the steel mesh hinge (122) and the steel mesh hinge rod (230). The lower steel mesh (1) and the upper steel mesh (2) are relatively fixedly connected by the supporting steel bar (3). The mesh group is positioned on the slope surface by the steel mesh positioning component (4).

2. The foundation pit slope protection steel mesh construction system according to claim 1, characterized in that, The lower reinforcing mesh (1) and the upper reinforcing mesh (2) further include: A first vertical steel bar bend (121) is provided on the lower vertical steel bar (120); A second vertical reinforcement bend (221) is provided on the upper vertical reinforcement (220).

3. The foundation pit slope protection steel mesh construction system according to claim 1, characterized in that, The steel mesh processing unit (5) includes: Lower frame (501), upper frame (502) located above the lower frame (501); The feeding assembly (510) is fixedly installed on the upper surface of the lower frame (501), the node welding unit (520) is fixedly connected to the upper frame (502), the transverse steel bar cutting unit (530), and the angle forming unit (540) is provided between the lower frame (501) and the upper frame (502). The vertical steel bar (6) is transported to the steel mesh processing unit (5) by the feeding assembly (510), the horizontal steel bar (7) is placed above the vertical steel bar (6) by the horizontal steel bar unloading unit (530), the welding is completed at the intersection of the vertical steel bar (6) and the horizontal steel bar (7) by the node welding unit (520), and the angle is processed in the vertical steel bar (6) by the angle forming unit (540).

4. The foundation pit slope protection steel mesh construction system according to claim 3, characterized in that, The node welding unit (520) includes: The upper frame (502) is horizontally fixedly connected to the limiting light rod (522), the transmission screw (523) is parallel to the limiting light rod (522) and rotatably connected to the upper frame (502), the movable bearing block (521) is slidably connected to the limiting light rod (522) and the transmission screw (523) respectively, the bearing block drive motor drives the transmission screw (523) to rotate, the angle adjustment motor (524) is located below the movable bearing block (521) and keeps the output shaft horizontal, the welding manipulator (525) is fixedly connected to the output shaft of the angle adjustment motor (524), and the welding manipulator (526) is located at the end of the welding manipulator (525).

5. A construction system for reinforced mesh for foundation pit slope protection according to any one of claims 3 or 4, characterized in that, The aforementioned transverse steel bar cutting unit (530) includes: The storage area (531) is formed by the inclined side plate (5311) and the vertical side plate (5312) fixedly connected to the upper frame (502); the pre-discharge area (532) is located at the lower end outlet of the storage area (531); the lower buffer part (533) is located at the lower end outlet of the pre-discharge area (532); and the single-ribbed material preparation unit (534) is fixedly installed on the side wall of the pre-discharge area (532). By placing the transverse steel bar (7) in the storage area (531), and by placing the single transverse steel bar (7) in the storage area (531) in the pre-discharge area (532) through the single-bar preparation unit (534), and by using the lower buffer part (533) to assist in the smooth lowering of the transverse steel bar (7).

6. The foundation pit slope protection steel mesh construction system according to claim 5, characterized in that, The single-ribbed material preparation unit (534) includes: The housing (5341) is fixedly connected to the outer wall of the pre-feeding area (532), the material preparation drive motor (5342) is fixedly connected to the inside of the housing (5341), the material preparation drive gear (5343) is fixedly connected to the output shaft of the material preparation drive motor (5342) on the same axis, the upper rack (5345) and the lower rack (5344) are respectively meshed with the upper and lower sides of the material preparation drive gear (5343) for horizontal transmission, and the upper clamping rod (5346) and the lower clamping rod (5347) are respectively connected to the side of the upper rack (5345) and the lower rack (5344) near the pre-feeding area (532). A slot is provided in the pre-feeding area (532) for sliding with the upper lever (5346) and the lower lever (5347).

7. The foundation pit slope protection steel mesh construction system according to claim 6, characterized in that, The corner forming unit (540) includes: An angle-bending mold assembly (541) fixedly connected to the upper frame (502), and an angle-bending stamping unit (542) provided on the lower frame (501). The angle-bending mold assembly (541) includes a pressure block (5411) fixedly connected to the upper frame (502) and a mold head disposed on the lower surface of the pressure block (5411); The angled stamping unit (542) includes a stamping drive motor (5422) fixedly connected to the lower frame (501), a first drive link (5423) fixedly connected to the stamping drive motor (5422) on the same axis, a second drive link (5424) rotatably connected to the other end of the first drive link (5423), a third drive link (5425) and a fourth drive link (5426) rotatably connected to the other end of the second drive link (5424), a fifth drive link (5427) rotatably connected to the other end of the fourth drive link (5426), and a stamping head (5428) hinged to the other end of the fifth drive link (5427); the stamping head (5428) is slidably connected to a slide groove (5429) vertically provided on the lower frame (501), and the left end of the third drive link (5425) is hinged to the lower frame (501).

8. A construction system for reinforced mesh for foundation pit slope protection according to any one of claims 6 or 7, characterized in that: The lower horizontal reinforcing bar (110), lower vertical reinforcing bar (120), upper horizontal reinforcing bar (210) and upper vertical reinforcing bar (220) are made of 6mm to 10mm round steel, and the spacing between adjacent reinforcing bars arranged in parallel is 150mm to 250mm. The length of the lower vertical reinforcing bar (120) and the upper vertical reinforcing bar (220) is greater than 300mm.

9. A construction method for a steel mesh construction system for foundation pit slope protection as described in claim 1, characterized in that, Includes the following steps: S100, according to the construction design requirements, use the steel mesh processing unit (5) to prefabricate a sufficient amount of steel mesh, and excavate the foundation pit at the construction site; S200: The lower steel mesh (1) and the upper steel mesh (2) are rotatably connected by the steel bar hinge (122) and the steel bar hinge rod (230), and the supporting steel bar (3) is used to fix the lower steel mesh (1) and the upper steel mesh (2) between them. The height between the lower steel mesh (1) and the upper steel mesh (2) is adjusted according to the flatness of the slope during on-site construction, thereby completing the installation of the steel mesh assembly. S300: Transport the steel mesh assembly to the construction site and use the steel mesh positioning component (4) to position the steel mesh assembly on the surface of the foundation pit slope; S400: Pour concrete into the steel mesh and submerge it, and complete the installation of the mesh and the pouring of concrete within 24 hours to complete the support construction of the foundation pit slope.

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