Single pipe fixing structure for reinforcing collapsible loess

Abstract

The utility model relates to the technical field of single-pipe fixing structures, in particular to a single-pipe fixing structure for reinforcing collapsible loess, which comprises a shell, a drill bit, a central shaft, two limiting components, two gears and four fixing components, the drill bit is fixedly connected with the shell and positioned below the shell, the central shaft is arranged inside the shell, and the two limiting components are fixedly connected with the central shaft. The two limiting assemblies are arranged on the two sides of the center shaft respectively, the two gears are fixedly connected with the center shaft and located on the surface of the center shaft, the four fixing assemblies are arranged on the two sides of the gears respectively, each fixing assembly comprises a rack and a fixing rod, the racks are meshed with the gears, the fixing rods are fixedly connected with the racks and located on one sides of the racks, and the fixing rods are fixedly connected with the gears. And a round hole is formed in the side face of the shell and matched with the fixing rod, and through the arrangement of the structure, the problems that in the prior art, after the drill bit stretches into loess, the fixing effect of the drill bit and the loess is poor, and the conveying efficiency and the immersing effect of a solution are affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of single-tube fixing structure technology, and in particular to a single-tube fixing structure for reinforcing collapsible loess. Background Technology

[0002] Collapsible loess is a special type of soil characterized by its loose structure and well-developed pores. When dry, it has high strength and low compressibility; however, once wetted, its structure rapidly deteriorates, resulting in significant additional deformation and leading to foundation instability and building damage. Therefore, when constructing on collapsible loess foundations, effective reinforcement measures must be taken, such as single-tube high-pressure jet grouting pile technology, to ensure foundation stability and building safety. When driving foundations on collapsible loess, it is generally necessary to first drive the soil into the ground using a drill bit, then add a solution as a solidifying agent to the loess and mix it to improve the soil's properties and structure, thereby reinforcing the loess, enhancing foundation stability, and preventing foundation settlement.

[0003] In the prior art, patent document with publication number (CN220150281U) mentions a single-pipe fixing structure for reinforcing collapsible loess, including a vertically arranged drill bit, a fixing component inside the drill bit, the fixing component including an annular groove, several spray holes circumferentially opened at the drill bit located in the groove, an annular pipe matching the groove horizontally arranged inside the groove, a conveying port opened on the outer wall of the annular pipe, the conveying port communicating with the spray holes, and a vertical pipe arranged at the center of the annular pipe, communicating with the annular pipe. This prior art enables the drill bit to remain stationary through the pipe when stirring in collapsible loess, and the entire device will not shake when a solution is added and conveyed in the pipe, so that the solution can be conveyed stably and continuously through the pipe, thereby improving the overall stability of the device and the conveying efficiency of the solution.

[0004] However, with the aforementioned existing technology, the fixation effect between the drill bit and the loess is poor after the drill bit is inserted into the loess, which affects the efficiency of solution delivery and immersion effect. Utility Model Content

[0005] The purpose of this invention is to provide a single-tube fixing structure for reinforcing collapsible loess, which solves the problem in the prior art where the fixing effect between the drill bit and the loess is poor after the drill bit is inserted into the loess, affecting the solution's transport efficiency and immersion effect.

[0006] To achieve the above objectives, this utility model provides a single-tube fixing structure for reinforcing collapsible loess, comprising a shell, a drill bit, a central shaft, two limiting components, two gears, and four fixing components. The drill bit is fixedly connected to the shell and located below the shell. The central shaft is disposed inside the shell. The two limiting components are respectively disposed on both sides of the central shaft. The two gears are fixedly connected to the central shaft and located on the surface of the central shaft. The four fixing components are respectively disposed on both sides of the gears. Each fixing component includes a rack and a fixing rod. The rack meshes with the gear, and the fixing rod is fixedly connected to the rack and located on one side of the rack. A circular hole is provided on the side of the shell, and the circular hole is adapted to the fixing rod.

[0007] The fixing component further includes a limiting strip, which is fixedly connected to the outer shell and covers the outside of the rack. The limiting strip has a concave cross-section.

[0008] The limiting component includes a fixing strip, a collar, and a limiting piece. The fixing strip is fixedly connected to the outer shell and located inside the outer shell. The collar is fixedly connected to the fixing strip and located in the middle section of the fixing strip. The limiting piece is fixedly connected to the central shaft and located at one end of the central shaft. The collar is sleeved on the outside of the limiting piece.

[0009] The single-tube fixing structure for reinforcing collapsible loess further includes a fixing ring, which is fixedly connected to the outer shell and located between the two gears. The cross-section of the fixing ring is U-shaped, and a cavity is formed between the fixing ring and the outer shell. Several openings are evenly provided on the surface of the outer shell, and the openings communicate with the cavity.

[0010] The single-tube fixing structure for reinforcing collapsible loess also includes a connecting pipe, which is fixedly connected to the fixing ring and located above the fixing ring. The connecting pipe communicates with the cavity.

[0011] This invention discloses a single-tube fixing structure for reinforcing collapsible loess. The central shaft is located inside the outer casing. Two limiting components are respectively located on both sides of the central shaft. Two gears are fixedly connected to the central shaft and located on its surface. Four fixing components are respectively located on both sides of the gears. A rack meshes with the gears, and a fixing rod is fixedly connected to the rack and located on one side of the rack. A circular hole is provided on the side of the outer casing, which is adapted to the fixing rod. The outer casing is driven into the ground using a drill bit. Rotating the central shaft drives the two gears to rotate, causing the racks on both sides of the gears to move accordingly. The fixing rod passes through the circular hole, extends into the outside of the outer casing, and is inserted into the soil, improving stability and ensuring the efficiency of solution delivery. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the single-tube fixing structure for reinforcing collapsible loess according to this utility model.

[0014] Figure 2 This is a top view of the single-tube fixing structure for reinforcing collapsible loess according to this utility model.

[0015] Figure 3 This is the utility model Figure 2 A sectional view along line AA.

[0016] Figure 4 This is the utility model Figure 3 A schematic diagram of the structure at point B.

[0017] 1-Outer shell, 2-Drill bit, 3-Central shaft, 4-Fixing ring, 5-Connecting pipe, 6-Gear, 7-Limiting strip, 8-Rack, 9-Fixing rod, 10-Fixing strip, 11-Collar, 12-Limiting piece, 13-Opening, 14-Round hole, 15-Cavity. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please see Figures 1-4 ,in, Figure 1 This is a schematic diagram of the single-tube fixing structure for reinforcing collapsible loess according to this utility model. Figure 2 This is a top view of the single-tube fixing structure for reinforcing collapsible loess according to this utility model. Figure 3 This is the utility model Figure 2 AA-line sectional view, Figure 4 This is the utility model Figure 3 A schematic diagram of the structure at point B.

[0020] This utility model provides a single-tube fixing structure for reinforcing collapsible loess, including a shell 1, a drill bit 2, a central shaft 3, a fixing ring 4, a connecting pipe 5, two limiting components, two gears 6, and four fixing components. Each fixing component includes a limiting strip 7, a rack 8, and a fixing rod 9. The limiting component includes a fixing strip 10, a collar 11, and a limiting piece 12. The aforementioned solution solves the problem in the prior art where the fixing effect between the drill bit and the loess is poor after the drill bit is inserted into the loess, which affects the solution's transport efficiency and penetration effect.

[0021] In this specific embodiment, the drill bit 2 is fixedly connected to the outer casing 1 and located below the outer casing 1. The central shaft 3 is disposed inside the outer casing 1. Two limiting components are respectively disposed on both sides of the central shaft 3. Two gears 6 are fixedly connected to the central shaft 3 and located on the surface of the central shaft 3. Four fixing components are respectively disposed on both sides of the gears 6. The rack 8 meshes with the gears 6. The fixing rod 9 is fixedly connected to the rack 8 and located on one side of the rack 8. A circular hole 14 is provided on the side of the outer casing 1. The circular hole 14 is adapted to the fixing rod 9. The drill bit 2 drives the outer casing 1 into the ground. The central shaft 3 is rotated, which drives the two gears 6 to rotate. The rotation of the gears 6 causes the racks 8 on both sides of the gears 6 to move accordingly. The fixing rod 9 passes through the circular hole 14 and extends into the outside of the outer casing 1, inserting into the soil, thus improving stability.

[0022] The limiting strip 7 is fixedly connected to the outer shell 1 and covers the outside of the rack 8. The cross-section of the limiting strip 7 is U-shaped. The limiting strip 7 restricts the position of the rack 8 so that the rack 8 is always outside the limiting strip 7.

[0023] Secondly, the fixing strip 10 is fixedly connected to the outer shell 1 and located inside the outer shell 1. The collar 11 is fixedly connected to the fixing strip 10 and located in the middle section of the fixing strip 10. The limiting piece 12 is fixedly connected to the central shaft 3 and located at one end of the central shaft 3. The collar 11 is sleeved on the outside of the limiting piece 12. The limiting piece 12 is locked inside the collar 11, which improves stability.

[0024] Secondly, the fixing ring 4 is fixedly connected to the outer shell 1 and located between the two gears 6. The cross-section of the fixing ring 4 is U-shaped, and a cavity 15 is formed between the fixing ring 4 and the outer shell 1. A plurality of openings 13 are evenly provided on the surface of the outer shell 1. The openings 13 communicate with the cavity 15. When the solution is injected into the interior of the fixing ring 4, the solution leaves through the cavity 15 and the plurality of openings 13, thereby improving the reinforcement effect.

[0025] In addition, the connecting tube 5 is fixedly connected to the fixing ring 4 and is located above the fixing ring 4. The connecting tube 5 is connected to the cavity 15, and the solution is injected into the interior of the fixing ring 4 through the connecting tube 5.

[0026] When using this utility model, the outer shell 1 is driven into the ground by the drill bit 2, and the solution is injected into the interior of the fixing ring 4 through the connecting pipe 5. The solution leaves through the cavity 15 and several openings 13, which improves the reinforcement effect. The central shaft 3 is rotated, and the collar 11 is fitted on the outside of the central shaft 3. The limiting piece 12 is locked inside the collar 11, which improves stability. The central shaft 3 drives the two gears 6 to rotate. The rotation of the gears 6 causes the racks 8 on both sides of the gears 6 to move accordingly. The fixing rod 9 passes through the round hole 14, extends into the outside of the outer shell 1, and is inserted into the soil.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A single pipe fixing structure for collapsible loess reinforcement, comprising a shell and a drill bit, the drill bit being fixedly connected with the shell and located below the shell, characterized in that, it further comprises a central shaft, two limiting assemblies, two gears and four fixing assemblies, the central shaft is arranged inside the shell, the two limiting assemblies are respectively arranged on the two sides of the central shaft, the two gears are fixedly connected with the central shaft and located on the surface of the central shaft, and the four fixing assemblies are respectively arranged on the two sides of the gears. Each of the fixing assemblies comprises a rack and a fixing rod, the rack is engaged with the gear, the fixing rod is fixedly connected with the rack and located on one side of the rack, the side surface of the shell is provided with a circular hole, and the circular hole is adapted to the fixing rod.

2. The single pipe fixing structure for collapsible loess reinforcement according to claim 1, characterized in that, the fixing assembly further comprises a limiting strip, the limiting strip is fixedly connected with the shell and covers the outside of the rack, and the limiting strip is in a concave shape in cross section.

3. The single pipe fixing structure for collapsible loess reinforcement according to claim 2, characterized in that, the limiting assembly comprises a fixing strip, a sleeve ring and a limiting sheet, the fixing strip is fixedly connected with the shell and located inside the shell, the sleeve ring is fixedly connected with the fixing strip and located at the middle section of the fixing strip, the limiting sheet is fixedly connected with the central shaft and located at one end of the central shaft, and the sleeve ring is sleeved outside the limiting sheet.

4. The single pipe fixing structure for collapsible loess reinforcement according to claim 3, characterized in that, the single pipe fixing structure for collapsible loess reinforcement further comprises a fixing ring, the fixing ring is fixedly connected with the shell and located between the two gears, the fixing ring is in a concave shape in cross section, a cavity is formed between the fixing ring and the shell, the surface of the shell is uniformly provided with a plurality of openings, and the openings are communicated with the cavity.

5. The single pipe fixing structure for collapsible loess reinforcement according to claim 4, characterized in that, the single pipe fixing structure for collapsible loess reinforcement further comprises a connecting pipe, the connecting pipe is fixedly connected with the fixing ring and located above the fixing ring, and the connecting pipe is communicated with the cavity.

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