Plastic drainage board anti-backing pile shoe
By combining the limiting plate with the bottom sealing round steel, the problem of silt clogging the guide pipe in the pile shoe during soft soil foundation construction was solved, realizing the precise construction of the drainage board and the reuse of the pile shoe, reducing costs and improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-26
- Publication Date
- 2026-04-07
AI Technical Summary
Existing pile shoes are prone to clogging of the conduit with silt when treating soft soil foundations, which can lead to the back-pulling of the drainage board. Furthermore, reusing pile shoes cannot ensure that the drainage board can be successfully detached after being anchored at the specified elevation, which increases construction costs and time.
The plastic drainage board anti-reverse belt pile shoe is formed by welding the limiting plate and the bottom sealing round steel or by casting it in one piece. The limiting plate restricts the pile shoe displacement, the bottom sealing round steel seals the end of the guide pipe, and the connecting components can be reused to ensure the stability of the drainage board during anchoring and pull-out at the specified elevation.
It enables precise control of the construction elevation of plastic drainage boards, reduces backflow, lowers construction costs, improves work efficiency, and supports the reuse of pile shoes.
Smart Images

Figure CN116163382B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of highway construction, and more particularly to a plastic drainage board anti-backlash pile shoe. Background Technology
[0002] Currently, adverse geological conditions are frequently encountered during highway construction, with soft soil foundations being a common example. When treating soft soil foundations, drainage boards deeply embedded in the soil are often used to prevent groundwater from entering the roadbed area. The drainage boards remove water from the foundation, increasing the effective stress acting on soil particles and accelerating foundation consolidation and settlement. In the current market, some use disposable pile shoes, while others use reusable ones. Using disposable pile shoes to anchor drainage boards ensures accurate placement of the drainage board at the designated elevation during insertion into the soft soil by the guide pipe, reducing the phenomenon of drainage board pull-back. However, this increases cost and construction time. Please refer to the appendix. Figure 1 There are also some reusable pile shoes. Although this solves the problem of disposable pile shoe materials, it cannot guarantee that the drainage board can be smoothly detached from the U-shaped round steel after being anchored at the specified elevation. There is some back-carrying phenomenon. When the guide pipe is inserted, if it encounters hard rock layers or large rocks in the silt, it will cause the pile shoe to shift and fail to seal the guide pipe. Silt can easily enter the guide pipe, causing blockage. This will also cause the drainage board to back-carry. Moreover, the existing pile shoes are relatively bulky. Summary of the Invention
[0003] In order to overcome the shortcomings of the prior art, one of the objectives of the present invention is to provide a plastic drainage board anti-backflow pile shoe, which can solve the problem of silt entering the conduit and clogging the conduit.
[0004] One of the objectives of this invention is achieved through the following technical solution:
[0005] A plastic drainage board anti-backflow pile shoe includes a limiting plate, a bottom sealing round steel, and a connecting component. The limiting plate and the bottom sealing round steel are fixed together by welding or one-time casting. The bottom sealing round steel is provided with a large end, which is fixedly connected to the connecting component.
[0006] Furthermore, the limiting plate is disposed in the middle of the bottom sealing round steel, and the distance from the bottom sealing round steel to both ends of the limiting plate is the same.
[0007] Furthermore, the limiting plate is rectangular.
[0008] Furthermore, the limiting plate includes a rectangular portion and an upper arc-shaped portion connected to the rectangular portion.
[0009] Furthermore, the connecting assembly includes multiple rings connected in series, with the end ring being fixedly connected to the large end of the bottom sealing round steel.
[0010] Furthermore, the large end of the bottom sealing round steel is provided with an installation hole, and the ring at the end is snapped and fixed to the installation hole.
[0011] Furthermore, the width of the limiting plate is 1-3cm.
[0012] Furthermore, the height of the limiting plate is 10-30cm.
[0013] Furthermore, the larger end is provided with a boss portion, which is connected to the connecting component.
[0014] Furthermore, the larger end is hemispherical.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0016] The limiting plate and the sealing round steel are fixed together by welding or one-time casting. The sealing round steel has a large end, which is fixedly connected to the connecting assembly. In actual use, the limiting plate restricts the left and right displacement of the pile shoe during use, the sealing round steel seals the end of the guide pipe to ensure that silt does not clog the guide pipe, and restricts the displacement of the plastic drainage board during insertion. The protruding parts at both ends of the sealing round steel automatically detach during the removal of the guide pipe, and the connecting assembly recovers the pile shoe for reuse. This invention achieves precise control of the construction elevation of the plastic drainage board, reducing the defects of the waterproof board being affected by pipe blockage or pile shoe impact. It enables the reuse of pile shoes, simplifies pile shoe processing and use, reduces costs, and improves work efficiency. The above description is only an overview of the technical solution of this invention. In order to better understand the technical means of this invention and to implement it according to the contents of the specification, and to make the above and other objects, features, and advantages of this invention more apparent, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0017] Figure 1 This is a schematic diagram illustrating the use of existing pile boots;
[0018] Figure 2 This is a structural diagram of the anti-backflow pile shoe of the plastic drainage board of the present invention;
[0019] Figure 3 For illustration purposes only;
[0020] Figure 4 This is another usage illustration;
[0021] Figure 5 This is yet another usage illustration.
[0022] In the diagram: 10, limiting plate; 20, bottom sealing round steel; 30, connecting assembly; 1, conduit; 2, plastic drainage board; 3, pile shoe. Detailed Implementation
[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0024] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] Please see Figure 2-5 A plastic drainage board anti-reverse pile shoe includes a limiting plate 10, a bottom sealing round steel 20, and a connecting component 30. The limiting plate 10 and the bottom sealing round steel 20 are fixed together by welding or one-time casting. The bottom sealing round steel 20 has a large end, which is fixedly connected to the connecting component 30. In actual use, the limiting plate 10 restricts the pile shoe from shifting left and right during use, the bottom sealing round steel 20 seals the end of the guide pipe to ensure that silt does not clog the guide pipe and restricts the plastic drainage board from shifting during insertion, and the protruding parts at both ends of the bottom sealing round steel 20 automatically detach during the removal of the guide pipe. The connecting component 30 retrieves the pile shoe for reuse.
[0027] Please refer to the following for details. Figure 3-5 The system includes a conduit 1, a plastic drainage board 2, a pile shoe 3, and an arc-shaped groove at the bottom of the conduit 1. In operation, after the insertion machine is in place and the location is determined, the drainage board is first extended out of the conduit, and then the pile shoe is installed at the end of the conduit. A limiting plate 10 is installed inside the conduit, and a bottom-sealing round steel 20 is embedded in the arc-shaped groove. Excluding the thickness of the drainage board, the radius of the arc-shaped groove matches the round steel, ensuring a seal. The drainage board is then folded back to wrap around the pile shoe and driven downwards. Upon reaching the designated elevation, the conduit is lifted, and the pile shoe automatically detaches from the conduit using its protruding sides. The drainage board is anchored at the designated elevation using its folded portion and the friction between the silt particles.
[0028] Preferably, the limiting plate 10 is disposed in the middle of the bottom sealing round steel 20, and the distance from the bottom sealing round steel 20 to both ends of the limiting plate 10 is the same.
[0029] Preferably, in one specific embodiment, the limiting plate 10 is rectangular. In another specific embodiment, the limiting plate 10 includes a rectangular portion and an upper arc-shaped portion connected to the rectangular portion. This invention achieves precise control of the construction elevation of the plastic drainage board, reducing defects caused by pipe blockage or pile shoe interference with the return flow of the waterproofing board. It also enables the reuse of pile shoes, simplifies pile shoe processing and use, reduces costs, and improves work efficiency.
[0030] Preferably, the connecting component 30 includes multiple rings connected in series, with the last ring fixedly connected to the large end of the bottom sealing round steel 20. The large end of the bottom sealing round steel 20 has a mounting hole, and the last ring is snapped into and fixed to the mounting hole. The width of the limiting plate 10 is 1-3 cm. The height of the limiting plate 10 is 10-30 cm. The large end has a protrusion that connects to the connecting component 30. The large end is hemispherical. The entire device has a compact, novel, and ingenious structure, is highly applicable, and easy to promote.
[0031] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.
Claims
1. A plastic drainage board anti-backlash pile shoe, comprising a limiting plate, a bottom sealing round steel, and a connecting assembly, characterized in that: The limiting plate and the bottom sealing round steel are fixed together by welding or one-time casting. The limiting plate is located in the middle of the bottom sealing round steel, and the distance from the bottom sealing round steel to both ends of the limiting plate is the same. The bottom sealing round steel has a large end, which is hemispherical and is fixedly connected to the connecting assembly. The connecting assembly includes multiple rings connected in series. The large end of the bottom sealing round steel has a mounting hole, and the ring at the end is snapped and fixed to the mounting hole. The limiting plate includes a rectangular part and an upper arc-shaped part connected to the rectangular part. The width of the limiting plate is 1-3cm, and the height of the limiting plate is 10-30cm. The limiting plate is installed inside the conduit, and the bottom sealing round steel is embedded in the arc-shaped groove at the bottom of the conduit. The radius of the arc-shaped groove, excluding the thickness of the drainage plate, matches that of the bottom sealing round steel. After the drainage board is folded back to wrap around the pile shoe, it is driven downwards. Once the designated elevation is reached, the guide pipe is lifted, and the pile shoe automatically detaches from the guide pipe using the protruding parts on both sides. The drainage board is anchored at the designated elevation using the folded part and the friction between the silt.
2. The plastic drainage board anti-backflow pile shoe as described in claim 1, characterized in that: The larger end is provided with a boss, which is connected to the connecting component.
Citation Information
Patent Citations
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CN210946779U