Protection device for foundation pit slope protection

Abstract

The utility model relates to the technical field of civil engineering, and particularly discloses a foundation pit slope protection device which comprises a protection grid unit, an expansion pressing strip is arranged below the protection grid unit in a sliding mode, a plurality of tightening ropes are arranged at the top of the expansion pressing strip, and the tightening ropes are all located at the four corners of the top of the expansion pressing strip. Bolting holes are formed in the positions, corresponding to the diagonal positions of the bolting ropes, of the top surfaces of the expansion pressing strips, the bolting ropes are used for bypassing the joints of the protection grid units, and one ends of the bolting ropes are used for being inserted into the bolting holes to be fixed. A lacing arm is clamped above a grating hole of the protective grating unit, a threaded hole is formed in the middle of the lacing arm, and a ground inserting screw rod is installed in the threaded hole in a threaded mode. The utility model aims to meet the protection requirements of different loose soil positions in a protection area, enhance the stability of the whole protection structure, effectively prevent the protection grid units from loosening, shifting or shaking in the use process, and ensure that the protection grid units are always in a stable state.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to a protective device for foundation pit slope protection. Background Technology

[0002] The foundation pit slope refers to the sloping surface formed by the excavation of the surrounding soil or rock mass during underground engineering projects such as building foundation pits and subway tunnels. This slope needs to be kept stable to prevent dangerous situations such as soil or rock mass landslides and collapses, and to ensure construction safety and the stability of underground structures.

[0003] With the acceleration of urbanization and the continuous emergence of high-rise buildings, the development and utilization of underground space are increasing. As a crucial part of building foundation construction, foundation pit engineering is also expanding in scale and depth, making the stability of foundation pit slopes a growing concern. The stability of foundation pit slopes directly affects the safety of foundation pit construction, the protection of the surrounding environment, and the economic rationality of the project. In practical engineering, due to the complexity of geological conditions, the diversity of construction methods, and the influence of environmental factors, it is necessary to ensure the safety and stability of foundation pit engineering to provide reliable technical support for the development of underground space.

[0004] In existing technologies, geogrids and other protective devices are typically used to cover the slopes of foundation pits to reinforce them and prevent weathering, loosening, or landslides. Existing geogrids are generally composed of interlaced horizontal and vertical grid strips of the same diameter. The resulting mesh is typically rectangular or circular in diameter, and the contact area between the grid strips and the soil of the foundation pit slope is fixed, providing the same protective effect at all locations within the area. However, it lacks effective targeted protection for areas with loose soil. Therefore, this invention proposes a protective device for foundation pit slope protection to address the problems existing in the prior art. Utility Model Content

[0005] In view of the shortcomings of the prior art mentioned above, the purpose of this utility model is to adapt to the protection needs of different loose soil locations within the protection area, enhance the stability of the entire protection structure, and effectively prevent the protective grid unit from loosening, shifting or shaking during use, ensuring that it is always in a stable state.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A protective device for slope protection of foundation pit includes a protective grid unit. An expansion strip is slidably arranged below the protective grid unit. Multiple tightening ropes are arranged on the top of the expansion strip. The multiple tightening ropes are located at the four corners of the top of the expansion strip. Tightening holes are provided on the top surface of the expansion strip at the diagonal positions corresponding to the tightening ropes. The tightening ropes are used to bypass the junction of the protective grid unit, and one end of the tightening rope is used to insert into the tightening hole for fixation.

[0008] A tensioning arm is snapped onto the top of the grid hole of the protective grid unit. A threaded hole is provided at the middle position of the tensioning arm, and a grounding screw is installed in the threaded hole.

[0009] As a further embodiment of this utility model, the bottom of the protective grille unit is provided with a horizontal groove, and multiple sets of grooves are provided at equal intervals. The top of the expansion strip is provided with multiple sliders, and the sliders are slidably disposed inside the groove.

[0010] As a further embodiment of this utility model, the slide groove is a T-shaped groove, the slider is a T-shaped block, and the T-shaped block is adapted to the T-shaped groove.

[0011] As a further embodiment of this utility model, the tightening rope is provided with a protruding head, the protruding head is an elastic body and there are multiple sets of it, the protruding head is frustoconical and the protruding head is adapted to the tightening hole.

[0012] As a further embodiment of this utility model, the tightening arm is X-shaped, and each of the four corners of the tightening arm is provided with a locking arm, which is respectively locked to the four adjacent joints of the protective grid unit.

[0013] As a further embodiment of this utility model, the inner side of the clamping arm is provided with a rubber strip, and the clamping arm is limited and clamped at the junction of the protective grid unit by the rubber strip.

[0014] As a further embodiment of this utility model, the protective grid unit is a square grid mesh, and the protective grid unit includes horizontal grid bars and vertical grid bars. Multiple sets of horizontal grid bars and vertical grid bars are provided, and the multiple sets of horizontal grid bars and vertical grid bars are equidistantly interlaced and integrally formed.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) When in use, multiple sliders are slidably set in the groove so that the expansion strip is slidably installed under the protective grid unit. Multiple sets of expansion strips can be installed according to the specific use, and can be slid to the required location according to the specific use. The expansion strip increases the contact area with the soil, increases the targeted protection area, adapts to the protection needs of different loose soil locations in the protection area, enhances the stability of the entire protection structure, avoids excessive local stress, reduces the risk of deformation, damage or uneven settlement of the protective grid unit due to concentrated force, and makes the protective grid unit more difficult to overturn.

[0017] (2) After moving the extension strip to the required position, the tightening rope is wrapped around the junction of the protective grid unit, and the other end is inserted into the tightening hole. According to the tightening requirements, the protrusion on the tightening rope is inserted into the appropriate position. The protrusion is used to fix the tightening rope and the tightening hole, thereby fixing the extension strip and the protective grid unit. The installation is more convenient and effectively prevents the tightening rope from slipping out of the tightening hole during the stress process, which enhances the reliability of the connection and avoids the protective grid unit from loosening due to the rope loosening, thereby improving the tensile performance of the entire protective structure.

[0018] (3) Install the clamping arm on the protective grid unit according to the fixed position, and then clamp the clamping arm at the four corners of the clamping arm to the four adjacent joints of the protective grid unit. Then rotate the ground screw to insert it into the ground to complete the custom fixation. This can effectively prevent the protective grid unit from loosening, shifting or shaking during use, and ensure that it is always in a stable state. Even when subjected to external impact or vibration, it can maintain a good fixing effect. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention;

[0020] Figure 2 This is a schematic diagram of the extension strip of this utility model;

[0021] Figure 3 This is a schematic diagram of the tightening arm of this utility model;

[0022] Figure 4 This is a schematic diagram of the protective grille unit of this utility model.

[0023] In the diagram: 1. Protective grid unit; 2. Extension strip; 3. Tensioning arm; 4. Tensioning rope; 5. Tensioning hole; 6. Grounding screw; 7. Slide groove; 8. Slider; 9. Protruding head; 10. Clamping arm; 11. Horizontal grid strip; 12. Vertical grid strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0027] Please see the appendix Figure 1-4 A protective device for slope protection of foundation pit includes a protective grid unit 1. An expansion strip 2 is slidably arranged below the protective grid unit 1. Multiple fastening ropes 4 are arranged on the top of the expansion strip 2. The multiple fastening ropes 4 are located at the four corners of the top of the expansion strip 2. Fastening holes 5 are provided on the top surface of the expansion strip 2 at the diagonal positions corresponding to the fastening ropes 4. The fastening ropes 4 are used to bypass the junction of the protective grid unit 1, and one end of the fastening rope 4 is used to insert into the fastening hole 5 for fixation.

[0028] The protective grid unit 1 has a clamping arm 3 snapped onto the top of the grid holes. A threaded hole is provided in the middle of the clamping arm 3, and a ground-inserting screw 6 is installed in the threaded hole. The lower end of the ground-inserting screw 6 is used to insert into the soil for fixation. In use, an extension strip 2 is slidably installed below the protective grid unit 1. Multiple sets of extension strips 2 can be installed as needed, and can be slid to the required position as needed. The extension strip 2 increases the contact area with the soil, thereby increasing the targeted protection area and adapting to the protection needs of different loose soil locations within the protection area.

[0029] The bottom of the protective grille unit 1 is provided with a horizontal sliding groove 7, and multiple sets of sliding grooves 7 are provided at equal intervals. The top of the extension strip 2 is provided with multiple sliders 8. The sliders 8 are slidably disposed inside the sliding groove 7. The sliding groove 7 is a T-shaped groove, and the slider 8 is a T-shaped block. The T-shaped block is adapted to the T-shaped groove.

[0030] Specifically, during use, the expansion strip 2 is slidably installed below the protective grid unit 1 by sliding the slider 8 and the groove 7. Multiple sets of expansion strip 2 can be installed as needed, and can be slid to the required position as needed. Through the T-shaped structure, the expansion strip 2 can slide without detaching from the protective grid unit 1.

[0031] The tightening rope 4 is provided with protruding heads 9, which are elastic bodies and have multiple sets. The protruding heads 9 are frustoconical in shape and are adapted to the tightening holes 5. In use, after moving the extension strip 2 to the required position, simply pass the tightening rope 4 around the junction of the protective grid unit 1, insert one end into the tightening hole 5, and, according to the tightening requirements, snap the protruding head 9 at the appropriate position on the tightening rope 4. The protruding head 9 is used to fix the tightening rope 4 and the tightening hole 5, thereby fixing the extension strip 2 and the protective grid unit 1, making installation more convenient.

[0032] The tightening arm 3 is X-shaped, and each of its four corners is equipped with a locking arm 10. The locking arms 10 at the four corners of the tightening arm 3 respectively lock into four adjacent joints of the protective grid unit 1. The inner side of each locking arm 10 is provided with an adhesive strip, and the locking arm 10 is secured to the joint of the protective grid unit 1 by the adhesive strip. The tightening arm 3 can be installed on the protective grid unit 1 according to the required fixing position. By locking the locking arms 10 at the four corners of the tightening arm 3 into the four adjacent joints of the protective grid unit 1, and rotating the ground-inserting screw 6 to insert it into the ground, a customized fixing can be completed, offering diverse functions.

[0033] The protective grid unit 1 is a square grid mesh, and includes horizontal grid bars 11 and vertical grid bars 12. Multiple sets of horizontal and vertical grid bars 11 and 12 are provided, and these multiple sets of horizontal and vertical grid bars 11 and 12 are equidistantly interlaced and integrally formed. This integrally formed rectangular diameter protective mesh provides better protection.

[0034] The working principle of this utility model is as follows:

[0035] In use, multiple sliders 8 are slidably set in the groove 7, so that the expansion strip 2 is slidably installed under the protective grid unit 1. Multiple sets of expansion strips 2 can be installed according to the specific use, and can be slid to the required position according to the specific use. The expansion strip 2 increases the contact area with the soil, increases the targeted protection area, adapts to the protection needs of different loose soil locations in the protection area, enhances the stability of the entire protection structure, avoids excessive local stress, reduces the risk of deformation, damage or uneven settlement of the protective grid unit 1 due to concentrated force, and makes the protective grid unit 1 more difficult to overturn.

[0036] After moving the extension strip 2 to the required position, the tightening rope 4 is looped around the junction of the protective grid unit 1, and the other end is inserted into the tightening hole 5. According to the tightening requirements, the protrusion 9 at the appropriate position on the tightening rope 4 is inserted. The protrusion 9 is used to fix the tightening rope 4 and the tightening hole 5, thereby fixing the extension strip 2 and the protective grid unit 1. The installation is more convenient and effectively prevents the tightening rope 4 from slipping out of the tightening hole 5 during the stress process, which enhances the reliability of the connection and avoids the protective grid unit from loosening due to rope loosening, thereby improving the tensile performance of the entire protective structure.

[0037] Furthermore, the clamping arms 3 are installed on the protective grid unit 1 according to the fixed position. Then, the clamping arms 10 at the four corners of the clamping arms 3 are respectively clamped to the four adjacent joints of the protective grid unit 1. The ground screw 6 is rotated to insert into the ground to complete the custom fixation. This can effectively prevent the protective grid unit 1 from loosening, shifting or shaking during use, and ensure that it is always in a stable state. Even when subjected to external impact or vibration, it can maintain a good fixing effect.

[0038] Finally, it should be noted that the protective grid unit 1 and other components involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A protective device for slope protection of a foundation pit, comprising a protective grid unit (1), characterized in that, An extension strip (2) is slidably arranged below the protective grid unit (1). Multiple fastening ropes (4) are arranged on the top of the extension strip (2). The multiple fastening ropes (4) are located at the four corners of the top of the extension strip (2). Fastening holes (5) are provided on the top surface of the extension strip (2) at the diagonal positions corresponding to the fastening ropes (4). The fastening ropes (4) are used to bypass the junction of the protective grid unit (1), and one end of the fastening ropes (4) is used to be inserted into the fastening holes (5) for fixing. The protective grid unit (1) has a clamping arm (3) snapped on the top of the grid hole. A threaded hole is provided at the middle position of the clamping arm (3), and a grounding screw (6) is installed in the threaded hole.

2. The protective device for foundation pit slope protection according to claim 1, characterized in that, The bottom of the protective grille unit (1) is provided with a horizontal groove (7), and multiple sets of grooves (7) are provided at equal intervals. The top of the expansion strip (2) is provided with multiple sliders (8), and the sliders (8) are slidably disposed inside the groove (7).

3. The protective device for foundation pit slope protection according to claim 2, characterized in that, The groove (7) is a T-shaped groove, and the slider (8) is a T-shaped block, which is adapted to the T-shaped groove.

4. The protective device for foundation pit slope protection according to claim 1, characterized in that, The tightening rope (4) is provided with a protruding head (9), which is an elastic body and has multiple sets. The protruding head (9) is frustum-shaped and is adapted to the tightening hole (5).

5. The protective device for foundation pit slope protection according to claim 1, characterized in that, The tightening arm (3) is X-shaped, and each of the four corners of the tightening arm (3) is provided with a clamping arm (10). The clamping arms (10) at the four corners of the tightening arm (3) are respectively clamped to the four adjacent joints of the protective grid unit (1).

6. The protective device for foundation pit slope protection according to claim 5, characterized in that, The inner side of the clamping arm (10) is provided with a rubber strip, and the clamping arm (10) is limited and clamped at the junction of the protective grid unit (1) by the rubber strip.

7. The protective device for foundation pit slope protection according to claim 1, characterized in that, The protective grid unit (1) is a square grid mesh, and the protective grid unit (1) includes horizontal grid strips (11) and vertical grid strips (12). The horizontal grid strips (11) and vertical grid strips (12) are provided in multiple sets, and the multiple sets of horizontal grid strips (11) and vertical grid strips (12) are equidistantly interlaced and integrally formed.

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