A fast soil nail installation device using a prefabricated grouting body

Abstract

The utility model discloses a kind of fast soil nail mounting devices using prefabricated grouting body, including soil nail main part and sealing retention mechanism, the upper end of the soil nail main part is equipped with sealing retention mechanism, the sealing retention mechanism includes limit mounting seat, the upper end of the limit mounting seat is equipped with two clamping angle blocks, the upper end of the clamping angle block is equipped with locking knob, the inside of the limit mounting seat is equipped with adjusting knob, the lower end surface of the adjusting knob is rotatably connected with tablet, sealing ring is equipped between the soil nail main part and limit mounting seat;Multiple first connecting bent pole, second connecting bent pole and third connecting bent pole are installed between the tablet and the bottom end of limit mounting seat.The utility model is grouting mouth pressurization plugging to soil nail, can effectively offset the pressure of soil layer, keep the effect of grouting, and axial positioning is facilitated to soil nail, avoid axial sliding influence use.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, specifically a rapid soil nailing installation device using precast grouting bodies. Background Technology

[0002] Foundation pit support refers to a series of technical measures taken during soil excavation to ensure the stability of the foundation pit, prevent collapse, and ensure the safety of the surrounding environment. It encompasses multiple stages, including the design, construction, and monitoring of the support structure. Soil nailing walls are commonly used in foundation pit support. Soil nailing walls are an in-situ soil reinforcement technique that reinforces the foundation pit slope with soil nails made of steel bars. A steel mesh is laid on the slope surface, followed by a layer of sprayed concrete, combining this with the earthwork slope reinforcement. Currently, there are several methods for constructing soil nailing walls, one of which involves directly driving soil nails into the soil. This method is simple, convenient, and saves time and labor.

[0003] When installing existing soil nails for foundation pit support, the soil pressure on the soil nails can easily cause soil to seep into the grouting port, affecting the grouting operation of the soil nails and making it difficult to maintain axial stability during the installation process. Therefore, it does not meet the existing requirements. To address this, we propose a rapid soil nail installation device using precast grouting bodies. Utility Model Content

[0004] The purpose of this utility model is to provide a rapid soil nail installation device using precast grouting bodies, in order to solve the problems mentioned in the background art, where soil nails are subject to soil pressure, causing soil to seep into the grouting port, affecting the grouting operation of the soil nails, and making it difficult to maintain axial stability during the installation process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid soil nail installation device using precast grouting body, comprising a soil nail body and a sealing and retaining mechanism. The sealing and retaining mechanism is installed at the upper end of the soil nail body. The sealing and retaining mechanism includes a limiting mounting seat. Two snap-fit ​​corner blocks are installed at the upper end of the limiting mounting seat. A locking knob is installed at the upper end of the snap-fit ​​corner blocks. An adjusting knob is installed on the inner side of the limiting mounting seat. A pressure plate is rotatably connected to the lower end face of the adjusting knob. A sealing ring is provided between the soil nail body and the limiting mounting seat.

[0006] Multiple first connecting rods, second connecting rods, and third connecting rods are installed between the bottom end of the pressure plate and the limiting mounting base. Positioning sleeves are installed at the upper ends of the multiple first connecting rods, second connecting rods, and third connecting rods, and sealing blocks are installed at the bottom ends of the multiple first connecting rods, second connecting rods, and third connecting rods.

[0007] Preferably, the outer surface of the soil nail body is provided with multiple mounting grooves, each mounting groove has multiple barbs installed on its inner side, each mounting groove has multiple grouting ports on one side, the multiple grouting ports and mounting grooves are arranged circumferentially relative to the axis of the soil nail body, the multiple barbs are arranged linearly along the side of the mounting groove, and the soil nail body is fixedly connected to the bottom end of the multiple barbs.

[0008] Preferably, the plurality of grouting ports are installed one-to-one with the sealing blocks. The sealing blocks are inserted into the inner side of the grouting ports. The sealing blocks and the positioning sleeves are fixedly connected by a first connecting rod, a second connecting rod, and a third connecting rod. The plurality of first connecting rods, second connecting rods, and third connecting rods are arranged in a circle relative to the axis of the soil nail body. The length of the plurality of first connecting rods, second connecting rods, and third connecting rods increases sequentially.

[0009] Preferably, the upper ends of the plurality of first connecting rods, second connecting rods and third connecting rods all pass through the limiting mounting seat and are fixedly connected to the positioning sleeve. The pressure plate is in close contact with the upper end surface of the positioning sleeve, and the limiting mounting seat is slidably connected to the plurality of first connecting rods, second connecting rods and third connecting rods.

[0010] Preferably, the limiting mounting base and the adjusting knob are connected by threads, the limiting mounting base and the upper end of the soil nail body are engaged by two snap-fit ​​corner blocks, and the upper end of the soil nail body and the two snap-fit ​​corner blocks are locked by locking knobs.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model installs multiple sealing blocks one-to-one with the grouting port, so that the sealing blocks can seal the grouting port under the support of the first connecting rod, the second connecting rod and the third connecting rod. The limiting mounting seat and the soil nail body are fixedly connected by two snap-fit ​​corner blocks and a locking knob. The adjusting knob is connected to the limiting mounting seat by a thread. When the adjusting knob is rotated, it drives the pressure plate to move down and press down on multiple positioning sleeves at the same time. Then, the positioning sleeves pressurize the sealing block through the first connecting rod, the second connecting rod and the third connecting rod, which counteracts the pressure of the soil layer on the sealing block through the grouting port, so as to maintain the stable sealing of the grouting port by the sealing block during the process of inserting the soil nail body into the soil layer.

[0013] 2. This utility model uses a sealing ring to seal the soil nail body and the limiting mounting seat, and an adjusting knob and pressure plate to seal the bottom of the limiting mounting seat, maintaining the internal sealing of the soil nail body. This separates the limiting mounting seat from the soil nail body, allowing the limiting mounting seat to simultaneously move the first connecting rod, the second connecting rod, and the third connecting rod upward through multiple positioning sleeves, thus separating the sealing block from the grouting port. This facilitates grouting operations inside the soil nail body. The multiple barbs fixedly installed on the surface of the soil nail body effectively improve the stability of the soil nail body in the soil layer and prevent axial sliding of the soil nail body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a top view of the entire utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the entire utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram of region A in the middle;

[0018] Figure 5 This is a schematic diagram of the connecting bent rod of this utility model.

[0019] In the diagram: 1. Soil nail body; 2. Grouting port; 3. Installation groove; 4. Barb; 5. Limiting mounting seat; 6. Snap-fit ​​corner block; 7. Locking knob; 8. Adjusting knob; 9. Pressure plate; 10. Sealing ring; 11. Sealing retention mechanism; 12. First connecting bend rod; 13. Second connecting bend rod; 14. Third connecting bend rod; 15. Sealing block; 16. Positioning sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1This utility model provides an embodiment of a rapid soil nail installation device using precast grouting body, comprising a soil nail body 1 and a sealing and retaining mechanism 11. The outer surface of the soil nail body 1 is provided with multiple installation grooves 3, and multiple barbs 4 are installed on the inner side of each installation groove 3. Multiple grouting ports 2 are provided on one side of each installation groove 3. The multiple grouting ports 2 and the installation grooves 3 are arranged circumferentially relative to the axis of the soil nail body 1. The multiple barbs 4 are arranged linearly along the side of the installation grooves 3. The bottom ends of the soil nail body 1 and the multiple barbs 4 are fixedly connected. The multiple barbs 4 can effectively improve the stability of the soil nail body 1 in the soil layer and prevent the soil nail body 1 from sliding axially.

[0022] Please see Figures 1 to 4 A sealing and retaining mechanism 11 is installed on the upper end of the soil nail body 1. The sealing and retaining mechanism 11 includes a limiting mounting seat 5. Two snap-fit ​​corner blocks 6 are installed on the upper end of the limiting mounting seat 5. A locking knob 7 is installed on the upper end of the snap-fit ​​corner blocks 6. An adjusting knob 8 is installed on the inner side of the limiting mounting seat 5. A pressure plate 9 is rotatably connected to the lower end face of the adjusting knob 8. A sealing ring 10 is provided between the soil nail body 1 and the limiting mounting seat 5. The limiting mounting seat 5 and the adjusting knob 8 are connected by threads. The limiting mounting seat 5 and the upper end of the soil nail body 1 are snapped together by the two snap-fit ​​corner blocks 6. The upper end of the soil nail body 1 and the two snap-fit ​​corner blocks 6 are locked together by the locking knob 7. The snap-fit ​​corner blocks 6 and the locking knob 7 facilitate the disassembly and assembly of the soil nail body 1 and the limiting mounting seat 5.

[0023] Please see Figures 3 to 5 Multiple first connecting rods 12, second connecting rods 13, and third connecting rods 14 are installed between the bottom end of the pressure plate 9 and the limiting mounting base 5. Positioning sleeves 16 are installed at the upper ends of the multiple first connecting rods 12, second connecting rods 13, and third connecting rods 14. Sealing blocks 15 are installed at the bottom ends of the multiple first connecting rods 12, second connecting rods 13, and third connecting rods 14. Multiple grouting ports 2 are installed one-to-one with the sealing blocks 15. The sealing blocks 15 are inserted into the inner side of the grouting ports 2. The sealing blocks 15 are pressurized by the first connecting rods 12, second connecting rods 13, and third connecting rods 14 to achieve stable sealing of the grouting ports 2 by the sealing blocks 15 during the process of inserting the soil nail body 1 into the soil layer.

[0024] The sealing block 15 and the positioning sleeve 16 are fixedly connected by the first connecting rod 12, the second connecting rod 13 and the third connecting rod 14. The multiple first connecting rods 12, the second connecting rod 13 and the third connecting rod 14 are arranged in a circle relative to the axis of the soil nail body 1. The length of the multiple first connecting rods 12, the second connecting rod 13 and the third connecting rod 14 increases sequentially. The upper ends of the multiple first connecting rods 12, the second connecting rod 13 and the third connecting rod 14 all pass through the limiting mounting seat 5 and are fixedly connected to the positioning sleeve 16. The pressure plate 9 is in contact with the upper end face of the positioning sleeve 16. The limiting mounting seat 5 is slidably connected to the multiple first connecting rods 12, the second connecting rod 13 and the third connecting rod 14. During the rotation of the adjusting knob 8, the pressure plate 9 is moved down and pressure is applied to the first connecting rods 12, the second connecting rod 13 and the third connecting rod 14 through the multiple positioning sleeves 16.

[0025] In use, when installing the soil nail body 1, the two ends of the multiple first connecting rods 12, second connecting rods 13 and third connecting rods 14 are fixedly connected to the sealing block 15 and the positioning sleeve 16 and inserted into the inner side of the soil nail body 1, so that the multiple sealing blocks 15 are installed one-to-one with the grouting port 2, so that the sealing blocks 15 can seal the grouting port 2 under the support of the first connecting rods 12, second connecting rods 13 and third connecting rods 14. Then, the sealing and retaining mechanism 11 is fitted onto the outside of the multiple positioning sleeves 16. Specifically, the multiple positioning sleeves 16 are set between the limiting mounting seat 5 and the pressure plate 9. The limiting mounting seat 5 is installed with the upper end of the soil nail body 1 by two snap-fit ​​corner blocks 6, and the upper end of the soil nail body 1 and the two snap-fit ​​corner blocks 6 are locked by the locking knob 7. Thus, the limiting mounting seat 5 and the soil nail body 1 are fixedly connected by the two snap-fit ​​corner blocks 6 and the locking knob 7.

[0026] The adjusting knob 8 is connected to the limiting mounting seat 5 by a thread. When the adjusting knob 8 is rotated, it drives the pressure plate 9 to move down and press down on multiple positioning sleeves 16 simultaneously. Then, the positioning sleeves 16 pressurize the sealing block 15 through the first connecting bent rod 12, the second connecting bent rod 13 and the third connecting bent rod 14, which counteracts the pressure of the soil layer on the sealing block 15 through the grouting port 2. This achieves a stable seal between the sealing block 15 and the grouting port 2 during the process of inserting the soil nail body 1 into the soil layer. At the same time, the sealing ring 10 seals the soil nail body 1 and the limiting mounting seat 5.

[0027] Adjusting knob 8 and pressure plate 9 seal the bottom of the limiting mounting seat 5 to maintain the internal sealing of the soil nail body 1. After the soil nail body 1 is installed, the limiting mounting seat 5 is separated from the soil nail body 1, so that the limiting mounting seat 5 drives the first connecting rod 12, the second connecting rod 13 and the third connecting rod 14 to move upward through multiple positioning sleeves 16, and realizes the separation of the sealing block 15 from the grouting port 2, thereby facilitating the grouting operation inside the soil nail body 1. The multiple barbs 4 fixedly installed on the surface of the soil nail body 1 can effectively improve the stability of the soil nail body 1 in the soil layer and prevent the soil nail body 1 from sliding axially.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rapid soil nailing device using precast grouting body, comprising a soil nail body (1) and a sealing and retaining mechanism (11), characterized in that: A sealing and retaining mechanism (11) is installed at the upper end of the soil nail body (1). The sealing and retaining mechanism (11) includes a limiting mounting seat (5). Two snap-fit ​​corner blocks (6) are installed at the upper end of the limiting mounting seat (5). A locking knob (7) is installed at the upper end of the snap-fit ​​corner blocks (6). An adjusting knob (8) is installed on the inner side of the limiting mounting seat (5). A pressure plate (9) is rotatably connected to the lower end face of the adjusting knob (8). A sealing ring (10) is provided between the soil nail body (1) and the limiting mounting seat (5). Multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14) are installed between the bottom end of the pressure plate (9) and the limiting mounting base (5). Positioning sleeves (16) are installed at the upper ends of the multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14), and sealing blocks (15) are installed at the bottom ends of the multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14).

2. The rapid soil nailing device using precast grouting body according to claim 1, characterized in that: The outer surface of the soil nail body (1) is provided with multiple mounting grooves (3), and multiple barbs (4) are installed on the inner side of each mounting groove (3). Multiple grouting ports (2) are provided on one side of each mounting groove (3). The multiple grouting ports (2) and the mounting grooves (3) are arranged in a circle relative to the axis of the soil nail body (1). The multiple barbs (4) are arranged linearly along the side of the mounting grooves (3). The bottom ends of the soil nail body (1) and the multiple barbs (4) are fixedly connected.

3. The rapid soil nailing device using precast grouting body according to claim 2, characterized in that: Multiple grouting ports (2) are installed one-to-one with sealing blocks (15). The sealing blocks (15) are inserted into the inner side of the grouting ports (2). The sealing blocks (15) and the positioning sleeves (16) are fixedly connected by first connecting rods (12), second connecting rods (13) and third connecting rods (14). Multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14) are arranged in a circle relative to the axis of the soil nail body (1). The length of multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14) increases sequentially.

4. The rapid soil nailing device using precast grouting body according to claim 3, characterized in that: The upper ends of the multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14) all pass through the limiting mounting seat (5) and are fixedly connected to the positioning sleeve (16). The pressure plate (9) is in close contact with the upper end surface of the positioning sleeve (16). The limiting mounting seat (5) is slidably connected to the multiple first connecting rods (12), second connecting rods (13) and third connecting rods (14).

5. A rapid soil nailing device using precast grouting body according to claim 4, characterized in that: The limiting mounting base (5) and the adjusting knob (8) are connected by threads. The limiting mounting base (5) and the upper end of the soil nail body (1) are connected by two snap-fit ​​corner blocks (6). The upper end of the soil nail body (1) and the two snap-fit ​​corner blocks (6) are locked by locking knobs (7).

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