A green assembled horizontal support assembly for foundation pit support and its use method

Abstract

The present invention relates to the technical field of foundation pit components, and in particular to a green assembled horizontal support component for foundation pit support. Its technical solution includes a support steel bar and an auxiliary support connection component installed on the outer surface of the support steel bar, a fastening component is installed on the top of the support steel bar, a threaded rod positioning component is installed inside the fastening component, and a green assembly component is installed on the top of the threaded rod positioning component. The present invention requires a small number of workers to install the assembled horizontal support component for foundation pit support, does not require large-scale mechanical equipment, is simple and fast to construct, has low energy consumption, reduces the use of manpower, and reduces construction costs; if necessary, the positioning screw, that is, the flexible protective surface layer, wire rope, nut and other similar mechanisms can be reused, further reducing construction costs.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit components, and in particular to a green assembled horizontal support component for foundation pit support. Background Art

[0002] During deep foundation pit construction, traditional soil nailing is a widely used foundation pit support technology. This involves nailing soil into the slope to reinforce the soil and provide horizontal resistance. Steel mesh is then sprayed onto the slope surface to stabilize the surface. However, the traditional mesh spraying process is complex and time-consuming.

[0003] Traditional horizontal support components are mostly fixed in size and are difficult to adapt to scenarios with irregular foundation pit shapes and complex geological conditions (such as soft soil and abundant groundwater). At the same time, traditional horizontal support components lack dynamic adjustment capabilities and cannot cope with foundation pit deformation or load changes during construction.

[0004] In the patent document with the publication number CN114197486B, a deep foundation pit prefabricated steel support structure is disclosed, which relates to the field of foundation pit support. This support structure uses a plug-in component to detachably fix the installation platform to the top of the lattice column, and the fixing seat is detachably fixed to the installation platform through a positioning column and a positioning nut. The horizontal steel is detachably fixed to the fixing seat through a locking assembly, thereby realizing the assembly and disassembly between the horizontal steel and the lattice column, so as to facilitate the repeated recycling of the steel structure.

[0005] When the above device is in use, positioning columns and positioning nuts are used to support the foundation pit. After the steel support structure is installed, most areas still need to be poured with a large amount of mud, which makes the overall disassembly and assembly of the deep foundation pit prefabricated steel support structure still relatively difficult in the later stage, which does not conform to the existing environmental protection concept.

[0006] Therefore, the present application proposes a green prefabricated horizontal support assembly for foundation pit support. Summary of the Invention

[0007] The purpose of the present invention is to address the problem in the background technology that after the steel support structure is installed, most areas still need to be poured with a large amount of mud, which makes the later disassembly and assembly of the deep foundation pit prefabricated steel support structure still relatively difficult, which is not in line with the existing environmental protection concept. A green prefabricated horizontal support assembly for foundation pit support is proposed.

[0008] The technical solution of the present invention is: a green assembled horizontal support assembly for foundation pit support, comprising a supporting steel bar and an auxiliary support connection assembly installed on the outer surface of the supporting steel bar, a fastening assembly installed on the top of the supporting steel bar, a threaded rod positioning assembly installed inside the fastening assembly, and a green assembly assembly installed on the top of the threaded rod positioning assembly;

[0009] The threaded rod positioning assembly includes a pushing sleeve rod slidably mounted inside the supporting steel bar;

[0010] The green assembly component includes a positioning screw threadedly installed inside the pushing sleeve, a nut threadedly installed on the top of the positioning screw, a green grid composite geotextile membrane is provided below the nut, the number of the positioning screws is multiple groups, a first surface layer overlap block is fixedly installed on one side of the green grid composite geotextile membrane, and a second surface layer overlap block is fixedly installed on the other side of the green grid composite geotextile membrane, the first surface layer overlap block and the second surface layer overlap block form a Z-shaped structure, and the first surface layer overlap block and the second surface layer overlap block are tied with iron wire;

[0011] A locking grooved tube is fixedly installed on the bottom of the second surface layer overlapping block, a hollow sleeve push block is fixedly installed on the bottom of the first surface layer overlapping block, a first bidirectional elastic metal block is fixedly installed inside the hollow sleeve push block, a protrusion is fixedly installed on the outside of the first bidirectional elastic metal block, and the protrusion is slidably installed inside the hollow sleeve push block, and a second bidirectional elastic metal block is fixedly installed on the side of the first bidirectional elastic metal block facing the locking grooved tube.

[0012] Optionally, a collar frame is threadedly mounted on the outer side of the auxiliary support connection assembly, a hollow collar block is threadedly mounted on one side of the collar frame, and a support connecting rod is inserted into the interior of the hollow collar block.

[0013] Optionally, the fastening assembly includes a hollow fastening ring fixedly mounted on the top of the supporting steel bar, and a limiting plate is fixedly mounted on the outer side of the hollow fastening ring.

[0014] Optionally, an auxiliary threaded plate is fixedly installed on the top of the hollow fastening ring, and the auxiliary threaded plate is connected to the green grid composite geotextile membrane through an auxiliary screw.

[0015] Optionally, the threaded rod positioning assembly further comprises a protective sealing sleeve rod slidably mounted on the outside of the pushing sleeve rod, a fixing plate is fixedly mounted on the outside of the protective sealing sleeve rod, and the fixing plate is slidably mounted on the hollow fastening ring.

[0016] Optionally, a positioning sleeve rod assembly is installed on the top of the fixing plate, and the positioning sleeve rod assembly includes a clamping rod fixedly installed on the top of the fixing plate, and a positioning clamping plate is fixedly installed on the outer side of the hollow fastening ring.

[0017] Optionally, a dustproof ring is fixedly installed on the bottom of the positioning clamping plate, a built-in threaded hollow sleeve is fixedly installed inside the dustproof ring, the holding rod is inserted into the built-in threaded hollow sleeve and the interior of the positioning clamping plate, the internal thread of the built-in threaded hollow sleeve is installed with an external threaded clamping block, and the external threaded clamping block is arranged between the holding rod and the built-in threaded hollow sleeve.

[0018] Optionally, a limited cavity is opened inside the built-in threaded hollow sleeve, and a plurality of elastic splints are fixedly installed inside the built-in threaded hollow sleeve. The bottom of the elastic splint is an inclined surface, and the inner wall surface of the external threaded clamp is an inclined surface. The external threaded clamp and the elastic splint are arranged in a fitted state.

[0019] Optionally, an inclined ring is fixedly installed on the top of the protective sealing sleeve rod, a spring is fixedly installed between the pushing sleeve rod and the protective sealing sleeve rod, a slide rail frame is opened on the top of the pushing sleeve rod, and a telescopic ring is slidably installed inside the slide rail frame.

[0020] Optionally, two sets of bidirectional arc rods are hinged inside the hollow fastening ring, an arc ring is fixedly installed on the outside of the protective sealing sleeve rod, an auxiliary wheel is rotatably installed on the bottom of the bidirectional arc rod, the auxiliary wheel is attached to the outside of the arc ring, and a threaded clamping ring is rotatably installed on the top of the bidirectional arc rod.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The installation of the horizontal support assembly for prefabricated foundation pit support requires fewer workers and no large-scale machinery and equipment. The construction is simple and fast, with low energy consumption, which reduces the use of labor and construction costs. If necessary, the positioning screw, that is, the flexible protective surface layer, wire rope, nut and other similar mechanisms can be reused, further reducing construction costs.

[0023] 2. As the clamping rod is locked, the positioning screw improves stability during installation and later use, reducing the possibility of deflection due to external force in the later stage. Since the positioning screw needs to be disassembled in the later stage, the improved stability of the positioning screw can reduce the occurrence of positioning screw slippage, further improving the practicality of this component;

[0024] 3. When the positioning screw and the push sleeve are installed normally, the groove of the positioning screw fits in with the telescopic collar. At this time, the slide rail frame contracts inward along the telescopic collar, which means that the slide rail frame exerts greater pressure on the positioning screw. The characteristics of the positioning screw groove can prevent the positioning screw from falling out, thereby improving the safety of the installation of this component.

[0025] 4. The inclined surface of the external thread clamp contacts the inclined surface of the elastic clamp, and the external thread clamp squeezes the elastic clamp. The elastic clamp fits tightly against the outer surface of the clamping rod to clamp it. Since this component is used for support, when it is subjected to greater pressure, the joints of many components are prone to deformation. The deformable elastic clamp reduces the local pressure on the external thread clamp, thereby making the component installation more stable.

[0026] 5. Compared with traditional soil nail wall slope support, green prefabricated support technology uses positioning screws, a polymer composite surface layer, to replace the traditional concrete spraying surface layer, reducing the production and installation process of steel mesh, thereby reducing costs, saving construction time, and meeting the requirements of slope design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the horizontal support assembly for green prefabricated foundation pit support is given;

[0028] Figure 2 It is a structural diagram of the first surface layer overlap block;

[0029] Figure 3 It is a structural diagram of the hollow sleeve push block;

[0030] Figure 4 for Figure 3 Enlarged view of the middle A area;

[0031] Figure 5 Schematic diagram of the structure of the support connecting rod of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the auxiliary support connection assembly of the present invention;

[0033] Figure 7 This is a schematic structural diagram of the protective sealing sleeve rod of the present invention;

[0034] Figure 8 This is a schematic structural diagram of the inclined collar of the present invention;

[0035] Figure 9 This is a schematic structural diagram of the bidirectional arc rod of the present invention;

[0036] Figure 10 This is a schematic diagram of the structure of the sleeve rod of the present invention;

[0037] Figure 11 for Figure 10 Enlarged view of the middle B area;

[0038] Figure 12 It is a structural schematic diagram of the elastic splint of the present invention;

[0039] Figure 13 for Figure 12 Magnified view of the middle C area.

[0040] Reference numerals: 1, supporting steel bar; 2, auxiliary supporting connection assembly; 201, collar frame; 202, hollow collar block; 203, supporting connecting rod; 3, fastening assembly; 301, hollow fastening ring; 302, auxiliary threaded plate; 303, limit plate; 4, threaded rod positioning assembly; 401, protective sealing sleeve rod; 402, tilting collar; 403, fixing plate; 404, two-way curved rod; 405, threaded clamping ring; 406, slide rail frame; 407, auxiliary rotating wheel; 408, curved collar; 409, pushing sleeve rod; 410, spring; 411, telescopic collar; 5. Green assembly components; 501. Positioning screw; 502. Green grid composite geotextile membrane; 503. First surface layer overlap block; 504. Second surface layer overlap block; 505. Engaging grooved tube; 506. First bidirectional elastic metal block; 507. Bump; 508. Second bidirectional elastic metal block; 509. Hollow sleeve push block; 510. Iron wire; 6. Positioning sleeve rod assembly; 601. Holding rod; 602. Dustproof collar; 603. Internally threaded hollow sleeve; 604. Limiting cavity; 605. Elastic splint; 606. Positioning clamping plate; 607. Externally mounted threaded clamping block. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0043] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] like Figure 1-Figure 3 As shown, the present invention proposes a green prefabricated horizontal support assembly for foundation pit support, which includes a supporting steel bar 1 and an auxiliary support connection assembly 2 installed on the outer surface of the supporting steel bar 1. A fastening assembly 3 is installed on the top of the supporting steel bar 1, and a threaded rod positioning assembly 4 is installed inside the fastening assembly 3. The threaded rod positioning assembly 4 includes a pushing sleeve rod 409 slidably installed inside the supporting steel bar 1.

[0047] As an embodiment, a green assembly component 5 is installed on the top of the threaded rod positioning component 4, and the green assembly component 5 includes a positioning screw 501 threadedly installed inside the pushing sleeve 409, a nut threadedly installed on the top of the positioning screw 501, and a green grid composite geotextile membrane 502 is arranged under the nut. The number of positioning screws 501 is multiple groups, and a first surface layer overlap block 503 is fixedly installed on one side of the green grid composite geotextile membrane 502, and a second surface layer overlap block 504 is fixedly installed on the other side of the green grid composite geotextile membrane 502. The first surface layer overlap block 503 and the second surface layer overlap block 504 form a Z-shaped structure, and an iron wire 510 is tied between the first surface layer overlap block 503 and the second surface layer overlap block 504.

[0048] like Figure 4 、 Figure 5 and Figure 6 As shown, a snap-fitting textured tube 505 is fixedly installed at the bottom of the second surface layer overlapping block 504, a hollow sleeve push block 509 is fixedly installed at the bottom of the first surface layer overlapping block 503, a first bidirectional elastic metal block 506 is fixedly installed inside the hollow sleeve push block 509, a protrusion 507 is fixedly installed on the outside of the first bidirectional elastic metal block 506, and the protrusion 507 is slidably installed inside the hollow sleeve push block 509, and a second bidirectional elastic metal block 508 is fixedly installed on the side of the first bidirectional elastic metal block 506 facing the snap-fitting textured tube 505;

[0049] This equipment is suitable for deep foundation pit projects of housing construction in geological conditions where slope can be laid, foundation trench projects of municipal engineering pipe corridors, and foundation trench projects for rainwater, sewage, heat and other pipelines in municipal road projects. It is particularly suitable for foundation pit slopes that have high environmental protection requirements and tight construction schedules and need to be closed in time, and has more obvious advantages for temporary projects.

[0050] This equipment utilizes green prefabricated foundation pit support technology, combining support bars 1 and positioning screws 501. This innovative support system builds upon the traditional soil nailing wall support mechanism by replacing wet methods like shotcrete with green, environmentally friendly standard positioning screws 501. Furthermore, it utilizes prefabricated construction techniques, replacing traditional cast-in-place construction methods. Compared to traditional soil nailing wall slope support, this green prefabricated support technology utilizes positioning screws 501, a polymer composite surface layer, instead of the traditional shotcrete surface layer. This reduces the fabrication and installation steps of the steel mesh, thereby reducing costs and time while still meeting slope design requirements. The green prefabricated foundation pit support system consists of support bars 1, positioning screws 501, connecting components such as the auxiliary support connection assembly 2, the fastening assembly 3, and the threaded rod positioning assembly 4, as well as a fastener assembly, including the positioning sleeve assembly 6.

[0051] Here is an explanation of the specific use and installation process of the green grid composite geotextile membrane 502: excavate the earthwork according to the design slope. Excavate the foundation pit in sections and layers from top to bottom, determine the upper and lower opening positions, and control the baseline from the bottom of the slope to the top. After the slope reaches the design slope, first clean the loose soil on the slope mechanically, and scrape and trim it from top to bottom. While trimming, check the slope and pit bottom width. If they do not meet the requirements, make timely adjustments. Consider the operating space of the soil nail wall drilling machine as 4m wide.

[0052] According to the design requirements, the slope is excavated and repaired mechanically, and after mechanical cleaning, the loose soil, tree roots, grass, hanging rocks, etc. within the slope are manually cleaned again;

[0053] The project arranges surveyors to mark the locations of soil nails in the construction section according to the design drawings. They use φ8, 300mm long steel bar heads to mark them. The allowable deviation of the soil nail positions is 100mm.

[0054] The holes are drilled by anchor drilling rigs, and some areas are drilled manually by Luoyang shovels. The holes are cleaned after drilling, and the hole diameter is 120mm.

[0055] At the same time, a supporting steel bar 1 is set every 2m. After the hole is cleaned, GFRP bars are installed inside the supporting steel bar 1. The supporting steel bar 1 and the GFRP bars are tied tightly with iron wire 510 to fill the inside of the supporting steel bar 1 and improve the stability of the supporting steel bar 1.

[0056] Before grouting, the residual or loose soil in the hole should be cleaned up. Use 42.5 cement slurry with a water-cement ratio of 0.45-0.5. Insert the grouting pipe to 250-500mm from the bottom of the hole. After the hole mouth overflows, grouting should be carried out while pulling out. Gravity grouting should be used 1-2 times after the hole is filled and before initial setting. The slurry should be stirred evenly and used as it is stirred. It should be used up before initial setting. The grouting filling coefficient should be greater than 1.

[0057] After the grouting is completed and reaches a certain design strength, the green grid composite geotextile membrane 502 can be laid and installed from top to bottom. A zigzag overlap is adopted between each two surface layers, that is, a "Z" shape is formed between the first surface layer overlap block 503 and the second surface layer overlap block 504. The overlap width is ≥300mm, and the overlap is tied with iron wire 510. The iron wire 510 is No. 16 iron wire, and the iron wire spacing is 500mm.

[0058] As the first surface layer overlap block 503 and the second surface layer overlap block 504 gradually approach each other in a plane, that is, when the spacing is set as required, the hollow sleeve push block 509 moves toward the engaging groove tube 505, and the protrusion 507 first moves along the smooth surface of the inner wall of the engaging groove tube 505. The first bidirectional elastic metal block 506 is an elastic metal. The first bidirectional elastic metal block 506 is subjected to the pressure of the smooth surface of the engaging groove tube 505 and moves toward the hollow sleeve push block 509 until the protrusion 507 comes to the groove of the engaging groove tube 505. At this time, the protrusion 507 recovers its elasticity and is stuck in the groove of the engaging groove tube 505, thereby improving the stability of multiple sets of green grid composite geotextile membranes 502 during installation. That is, when multiple groups of green grid composite geotextile membranes 502 are bundled, they are not prone to shaking, which affects the installation accuracy. At the same time, if the green grid composite geotextile membrane 502 has different installation requirements and removal, a more labor-saving way is that a pull rope can be installed on one side of the second bidirectional elastic metal block 508, and the second bidirectional elastic metal block 508 is pulled outward by the pull rope, and the first bidirectional elastic metal block 506 is driven by the tension of the inclined surface of the second bidirectional elastic metal block 508 to move toward the inside of the hollow sleeve push block 509, so that the second surface layer overlap block 504 and the hollow sleeve push block 509 can be separated, thereby facilitating the removal or adjustment of multiple groups of green grid composite geotextile membranes 502.

[0059] The green grid composite geotextile membrane 502 is used as a green and environmentally friendly support surface layer for installation. The green grid composite geotextile membrane 502 is covered on the outside of multiple supporting steel bars 1, and the positioning screw 501 is a green polymer material with high environmental protection. The intact green grid composite geotextile membrane 502 can be recycled when necessary, and the damaged green grid composite geotextile membrane 502 can be directly buried and degraded. The overall installation process of this application is relatively simple and can be directly disassembled and installed, so that the construction process will not cause pollution to the environment, there is no wet operation on site, the damage to the environment is reduced, and it meets the requirements of sustainable development.

[0060] At the same time, with the increasing labor costs today, the horizontal support assembly for prefabricated foundation pit support of the present application requires a small number of installation workers and does not require large-scale mechanical equipment. The construction is simple and fast, with low energy consumption, which reduces the use of labor and reduces construction costs. If necessary, the positioning screw 501, that is, the flexible protective surface layer, wire rope, nut and other similar mechanisms can be reused, further reducing construction costs.

[0061] Moreover, the positioning screw 501 is used as the surface material, which has strong tensile strength and good waterproof properties. The surface materials are all produced in a standardized manner in the factory, with stable product quality control. The construction quality of the green prefabricated foundation pit support system is controllable. After the construction is completed, the overall appearance quality of the surface layer is good, which improves the overall image of the project.

[0062] As an implementation method, Figure 5 and Figure 6 As shown, the outer side of the auxiliary support connection component 2 is threadedly installed with a collar frame 201, and a hollow collar block 202 is threadedly installed on one side of the collar frame 201. A support connecting rod 203 is inserted into the interior of the hollow collar block 202. The fastening component 3 includes a hollow fastening ring 301 fixedly installed on the top of the supporting steel bar 1, and a limit plate 303 is fixedly installed on the outer side of the hollow fastening ring 301. An auxiliary threaded plate 302 is fixedly installed on the top of the hollow fastening ring 301. If multiple supporting steel bars 1 are required to be connected and installed, the collar frame 201 can be bolted to the outer side of the supporting steel bar 1 for easy disassembly in the later stage. At the same time, the supporting connecting rod 203 connects the supporting steel bars 1 one by one through the hollow collar block 202;

[0063] like Figure 7-13As shown, the auxiliary threaded plate 302 is connected to the green grid composite geotextile membrane 502 through an auxiliary screw, and the threaded rod positioning assembly 4 also includes a protective sealing sleeve rod 401 slidably mounted on the outside of the pushing sleeve rod 409, and a fixed plate 403 is fixedly mounted on the outside of the protective sealing sleeve rod 401, and the fixed plate 403 is slidably mounted on the hollow fastening ring 301. A positioning sleeve rod assembly 6 is installed on the top of the fixing plate 403, and the positioning sleeve rod assembly 6 includes a holding rod 601 fixedly mounted on the top of the fixing plate 403, and a positioning clamping plate 606 is fixedly mounted on the outside of the hollow fastening ring 301. The bottom of the positioning clamping plate 606 is fixedly mounted There is a dustproof collar 602, and a built-in threaded hollow sleeve 603 is fixedly installed inside the dustproof collar 602. The holding rod 601 is inserted into the inside of the built-in threaded hollow sleeve 603 and the positioning clamp 606. The internal thread of the built-in threaded hollow sleeve 603 is installed with an external threaded clamp 607. The external threaded clamp 607 is set between the holding rod 601 and the built-in threaded hollow sleeve 603. A limited cavity 604 is opened inside the built-in threaded hollow sleeve 603. A plurality of elastic splints 605 are fixedly installed inside the built-in threaded hollow sleeve 603. The bottom of the elastic splint 605 is an inclined surface, and the inner wall of the external threaded clamp 607 is provided with a plurality of elastic splints 605. The surface is an inclined surface, and the external threaded clamping block 607 and the elastic clamping plate 605 are arranged in a fitted state. When the green grid composite geotextile membrane 502 and the supporting steel bar 1 are installed, the threaded end of the positioning screw 501 is threadedly connected with the pushing sleeve 409, and at the same time the holding rod 601 extends into the interior of the positioning clamping plate 606 and the internal threaded hollow sleeve 603, and the external threaded clamping block 607 moves along the thread of the internal threaded hollow sleeve 603 toward the depth of the internal threaded hollow sleeve 603. At this time, the inclined surface of the external threaded clamping block 607 contacts the external threaded clamping block 607, and the external threaded clamping block 607 is a variable material, which can be For components such as copper sheets, since the inclined surface of the external threaded clamp 607 protrudes more inward than the inclined surface of the elastic splint 605, that is, the inclined surface of the external threaded clamp 607 contacts the inclined surface of the elastic splint 605, the external threaded clamp 607 squeezes the elastic splint 605, and the elastic splint 605 fits tightly against the outer surface of the clamping rod 601 to clamp it. Since this component is used for support, when it is subjected to greater pressure, the connections of many components are easily deformed. The deformability of the elastic splint 605 reduces the local pressure on the external threaded clamp 607, thereby making the component installation more stable.

[0064] In this embodiment, Figure 7-11As shown, the top of the protective sealing sleeve rod 401 is fixedly installed with an inclined collar 402, a spring 410 is fixedly installed between the pushing sleeve rod 409 and the protective sealing sleeve rod 401, a slide rail frame 406 is provided on the top of the pushing sleeve rod 409, and a telescopic collar 411 is slidably installed inside the slide rail frame 406. Two groups of bidirectional arc rods 404 are hinged inside the hollow fastening ring 301, and an arc collar 408 is fixedly installed on the outside of the protective sealing sleeve rod 401. An auxiliary rotating wheel 407 is rotatably installed at the bottom of the bidirectional arc rod 404, and the auxiliary rotating wheel 407 is fitted on the outside of the arc collar 408. A threaded clamping ring 405 is rotatably installed on the top of the bidirectional arc rod 404. When the staff installs the positioning screw 501 along the pushing sleeve rod 409, the staff lifts the fixed plate 403 and moves upward along the positioning clamping plate 606 through the clamping rod 601. At this time, the arc collar 408 moves along with the protective sealing sleeve rod 40 1 moves upward, and the arc-shaped collar 408 and the auxiliary rotating wheel 407 generate rolling friction. Under the guidance of the rolling friction of the auxiliary rotating wheel 407, the bidirectional arc-shaped rod 404 deflects along the hollow fastening ring 301 toward the protective sealing sleeve rod 401, and the bidirectional arc-shaped rod 404 drives the threaded retaining ring 405 to fit tightly against the outer side of the positioning screw 501. It should be noted that the outer side of the positioning screw 501 is provided with a deep thread, while the outer side of the threaded retaining ring 405 is in a gear tooth state. The fine gear teeth of the threaded retaining ring 405 are just stuck in the inner part of the thread of the positioning screw 501. As the retaining rod 601 is locked, the stability of the positioning screw 501 is improved during installation and subsequent use, and the possibility of deflection due to external force in the later stage is reduced. Because the positioning screw 501 needs to be disassembled later, the improved stability of the positioning screw 501 can reduce the occurrence of slipping of the positioning screw 501, further improving the practicality of the present assembly.

[0065] At the same time, if the positioning screw 501 vibrates with the green grid composite geotextile membrane 502, the positioning screw 501 drives the pushing sleeve 409 to move toward the inside of the protective sealing sleeve 401, and the elastic force of the spring 410 can provide a certain buffer. If the positioning screw 501 comes out, the pushing sleeve 409 and the positioning screw 501 can move out together. Since the inclined surface of the inclined ring 402 is wider at the bottom and narrower at the top from bottom to top, the telescopic ring 411 is subjected to a greater pressure from the inclined surface of the inclined ring 402. When the positioning screw 501 and the pushing sleeve 409 are normally installed, the groove of the positioning screw 501 fits with the telescopic ring 411. At this time, the slide rail frame 406 contracts inwardly along the telescopic ring 411, that is, the slide rail frame 406 generates greater pressure on the positioning screw 501. By utilizing the characteristics of the groove of the positioning screw 501, the positioning screw 501 can be prevented from coming out, thereby improving the safety of the installation of this component.

[0066] It is explained here that the telescopic ring 411 is not only made of elastic material, such as a spring, but also is a telescopic ring structure, which meets the requirements of this component.

[0067] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A green assembled horizontal support assembly for foundation pit support, comprising a support steel bar (1) and an auxiliary support connection assembly (2) mounted on the outer surface of the support steel bar (1), characterized in that: A fastening assembly (3) is installed on the top of the supporting steel bar (1), a threaded rod positioning assembly (4) is installed inside the fastening assembly (3), and a green assembly assembly (5) is installed on the top of the threaded rod positioning assembly (4); The threaded rod positioning assembly (4) includes a push rod (409) slidably mounted inside the supporting reinforcement rod (1); The green assembly component (5) includes a positioning screw (501) threadedly mounted inside the pushing sleeve (409), a nut threadedly mounted on the top of the positioning screw (501), a green grid composite geotextile membrane (502) disposed below the nut, the number of the positioning screw (501) is multiple groups, a first surface layer overlap block (503) is fixedly mounted on one side of the green grid composite geotextile membrane (502), a second surface layer overlap block (504) is fixedly mounted on the other side of the green grid composite geotextile membrane (502), the first surface layer overlap block (503) and the second surface layer overlap block (504) form a Z-shaped structure, and an iron wire (510) is tied between the first surface layer overlap block (503) and the second surface layer overlap block (504); A snap-fitting pattern tube (505) is fixedly mounted on the bottom of the second surface layer overlap block (504), a hollow sleeve push block (509) is fixedly mounted on the bottom of the first surface layer overlap block (503), a first bidirectional elastic metal block (506) is fixedly mounted inside the hollow sleeve push block (509), a protrusion (507) is fixedly mounted on the outside of the first bidirectional elastic metal block (506), the protrusion (507) is slidably mounted inside the hollow sleeve push block (509), and a second bidirectional elastic metal block (508) is fixedly mounted on the side of the first bidirectional elastic metal block (506) facing the snap-fitting pattern tube (505); As the first surface layer overlap block (503) and the second surface layer overlap block (504) gradually approach each other in a plane, that is, when the spacing is set as required, the hollow sleeve push block (509) moves toward the engaging groove tube (505), and the protrusion (507) first moves along the smooth surface of the inner wall of the engaging groove tube (505). The first bidirectional elastic metal block (506) is a metal with elasticity. The first bidirectional elastic metal block (506) is subjected to the pressure of the smooth surface of the engaging groove tube (505) and moves toward the hollow sleeve push block (509) until the protrusion (507) reaches the groove of the engaging groove tube (505).

2. A green assembled horizontal support assembly for foundation pit support according to claim 1, characterized in that: A collar frame (201) is threadedly mounted on the outside of the auxiliary support connection assembly (2), a hollow collar block (202) is threadedly mounted on one side of the collar frame (201), and a support connecting rod (203) is inserted into the interior of the hollow collar block (202).

3. A green assembled horizontal support assembly for foundation pit support according to claim 1, characterized in that: The fastening assembly (3) comprises a hollow fastening ring (301) fixedly mounted on the top of the supporting reinforcement rod (1), and a limiting plate (303) is fixedly mounted on the outer side of the hollow fastening ring (301).

4. A green assembled horizontal support assembly for foundation pit support according to claim 3, characterized in that: An auxiliary threaded plate (302) is fixedly mounted on the top of the hollow fastening ring (301), and the auxiliary threaded plate (302) is connected to the green grid composite geotextile membrane (502) via an auxiliary screw.

5. The green assembled horizontal support assembly for foundation pit support according to claim 3 is characterized in that: The threaded rod positioning assembly (4) further comprises a protective sealing sleeve rod (401) slidably mounted on the outside of the pushing sleeve rod (409), a fixing plate (403) being fixedly mounted on the outside of the protective sealing sleeve rod (401), and the fixing plate (403) being slidably mounted on the hollow fastening ring (301).

6. A green assembled horizontal support assembly for foundation pit support according to claim 5, characterized in that: A positioning sleeve rod assembly (6) is installed on the top of the fixing plate (403), and the positioning sleeve rod assembly (6) includes a clamping rod (601) fixedly installed on the top of the fixing plate (403), and a positioning clamping plate (606) is fixedly installed on the outside of the hollow fastening ring (301).

7. A green assembled horizontal support assembly for foundation pit support according to claim 6, characterized in that: A dustproof collar (602) is fixedly mounted on the bottom of the positioning clamp (606), a built-in threaded hollow sleeve (603) is fixedly mounted inside the dustproof collar (602), the holding rod (601) is plugged into the built-in threaded hollow sleeve (603) and the positioning clamp (606), an external threaded clamp (607) is mounted on the internal thread of the built-in threaded hollow sleeve (603), and the external threaded clamp (607) is arranged between the holding rod (601) and the built-in threaded hollow sleeve (603).

8. The green assembled horizontal support assembly for foundation pit support according to claim 7, characterized in that: A limited cavity (604) is provided inside the internal threaded hollow sleeve (603), and a plurality of elastic clamps (605) are fixedly installed inside the internal threaded hollow sleeve (603). The bottom of the elastic clamp (605) is an inclined surface, and the inner wall surface of the external threaded clamp (607) is an inclined surface. The external threaded clamp (607) and the elastic clamp (605) are arranged in a fitted state.

9. The green assembled horizontal support assembly for foundation pit support according to claim 5, characterized in that: An inclined collar (402) is fixedly installed on the top of the protective sealing sleeve rod (401), a spring (410) is fixedly installed between the pushing sleeve rod (409) and the protective sealing sleeve rod (401), a slide rail frame (406) is opened on the top of the pushing sleeve rod (409), and a telescopic collar (411) is slidably installed inside the slide rail frame (406).

10. A green assembled horizontal support assembly for foundation pit support according to claim 9, characterized in that: Two sets of bidirectional arc-shaped rods (404) are hinged inside the hollow fastening ring (301), an arc-shaped collar (408) is fixedly mounted on the outside of the protective sealing sleeve rod (401), an auxiliary rotating wheel (407) is rotatably mounted on the bottom of the bidirectional arc-shaped rod (404), the auxiliary rotating wheel (407) is fitted on the outside of the arc-shaped collar (408), and a threaded retaining ring (405) is rotatably mounted on the top of the bidirectional arc-shaped rod (404).

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