A cleaning device for cleaning soft soil in a cavity of a hollow pile

Abstract

The utility model provides a kind of removing device for cleaning soft mud in hollow pile cavity, through the synergic cooperation of force link, mud taking cylinder, stop portion, upper limit portion, lower limit portion and mud discharging pile, mechanized dredging operation is realized;When force link is pressed down, the reaction force of mud to stop portion pushes mud taking cylinder to rise to upper limit portion, forms the opening downward storage mud space, when force link is lowered, soft mud in hollow pile cavity is automatically collected;When pile is lifted, mud taking cylinder falls to lower limit portion under the action of gravity, closes bottom entrance to prevent soft mud from falling;When mud is discharged, mechanical mud discharging is completed by the limiting of stop portion by mud discharging pile, the whole process does not need manual intervention, significantly improves dredging efficiency and reduces labor intensity.The utility model realizes efficient dredging by mechanical linkage, solves the problems of low efficiency of manual excavation and easy mud backfall, is especially suitable for cleaning operation of deep pile, narrow diameter and high viscosity mud, and work efficiency and safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of pile construction technology, and more specifically, to a removal device for cleaning soft mud inside the cavity of hollow piles. Background Technology

[0002] Prestressed concrete pipe piles and steel pipe piles are the most widely used in China as temporary support structures for foundation pits. These piles are vertically inserted into the soil using pile driving equipment. During construction, it's inevitable that soil will get into the inner cavity of the pile core, which cannot be removed by excavators. Workers typically use specially processed crowbars, shovels, or spades to clean it, a time-consuming, labor-intensive, and extremely inefficient process with very high labor intensity. This is especially true when installing pipe piles in riverbeds, where removing silt from the pile core is a high-intensity operation that is not only inefficient but also poses significant safety hazards, easily leading to injuries or fatalities. Therefore, designing a device that can quickly and conveniently clean the soil from inside the pile core has become a problem that needs to be solved. Summary of the Invention

[0003] This utility model provides a cleaning device for cleaning soft mud inside the cavity of hollow piles, so as to solve the technical problems of difficulty in cleaning soft mud inside the cavity of hollow piles, low work efficiency and safety hazards in the prior art.

[0004] This utility model provides a device for cleaning soft soil inside the cavity of a hollow pile, comprising: a force transmission rod that moves along the axis of the hollow pile within the cavity, and a lower limiting part and an upper limiting part spaced apart along the length of the force transmission rod; wherein the lower limiting part is located at the bottom of the force transmission rod, and the radial dimensions of both the lower limiting part and the upper limiting part are larger than the radial dimension of the force transmission rod; a mud-collecting cylinder that is sleeved on the force transmission rod and is restricted to move within the space between the upper limiting part and the lower limiting part; a stop part is provided around the mud-collecting cylinder; when the force transmission rod moves within the cavity of the hollow pile, the mud-collecting cylinder can move in the opposite direction of the movement of the force transmission rod between the lower limiting part and the upper limiting part under the resistance of the soft soil or the weight of the mud-collecting cylinder itself.

[0005] Furthermore, it also includes a mud-discharging pile, which generates resistance against the stop portion when the force transmission rod moves downward.

[0006] Furthermore, the cross-sectional shape of the mud-collecting cylinder matches the cross-sectional shape of the hollow pile's inner cavity.

[0007] Furthermore, the cross-sectional shape of the lower limiting portion matches the cross-sectional shape of the mud-collecting cylinder.

[0008] Furthermore, the cross-sectional shape of the mud sampling cylinder is circular, elliptical, fan-shaped, semi-circular, regular polygon, irregular polygon, or rounded polygon.

[0009] Furthermore, the lower limiting part is conical, with the tip of the cone facing into the hollow pile cavity.

[0010] Furthermore, the force transmission rod is made of I-beams.

[0011] Furthermore, the inner diameter of the mud-collecting cylinder is approximately 2mm to 10mm larger than the outer diameter of the force transmission rod.

[0012] Furthermore, the cross-section of the stop portion matches the cross-section of the hollow pile's inner cavity.

[0013] Furthermore, the distance between the upper limit portion and the lower limit portion is greater than the height of the mud-collecting cylinder by more than 20cm.

[0014] The beneficial effects of this utility model are:

[0015] This utility model discloses a cleaning device for removing soft mud from the cavity of hollow piles. Through the coordinated operation of a force transmission rod, a mud-collecting cylinder, a stop, an upper limit position, a lower limit position, and a mud-discharging pile, mechanized dredging operations are achieved. When the force transmission rod is pressed down, the reaction force of the mud on the stop pushes the mud-collecting cylinder up to the upper limit position, forming a mud storage space with the opening facing downwards. When the force transmission rod descends, it automatically collects the soft mud from the hollow pile cavity. When the pile is lifted, the mud-collecting cylinder automatically falls to the lower limit position under the action of gravity, sealing the bottom inlet to prevent the soft mud from falling out. During mud unloading, the mud unloading pile limits the stop position to complete the mechanical unloading. The entire process requires no manual intervention, significantly improving dredging efficiency and reducing labor intensity.

[0016] The dowel bar can be designed in sections and can be flexibly replaced according to the pile depth. The cross-section of the mud sampling cylinder matches the cross-section of the hollow pile cavity, which can be used for pile cores of various depths and shapes. The dowel bar is made of I-beams, which are easy to obtain. Compared with bar materials, it increases the gap between the dowel bar and the mud sampling cylinder, thereby increasing the capacity of the mud storage space.

[0017] The conical design of the lower limit part reduces the resistance when the device is pressed down, and the cooperation between the upper limit part and the stop part forms a stable reaction point to ensure the safe and reliable storage of mud in the mud-taking cylinder; when lifting the pile, the cooperation between the lower limit and the mud-taking cylinder prevents the soil from falling off or getting stuck.

[0018] The pure mechanical transmission method is suitable for various operating environments, has a simple and reliable structure, low maintenance costs, and avoids the operational limitations of traditional power equipment in deep and narrow pile cores.

[0019] This cleaning device for removing soft mud from the cavity of hollow piles achieves efficient dredging through mechanical linkage, solving the problems of low efficiency and easy mud fallback in manual excavation. It is especially suitable for cleaning deep piles, narrow diameters and highly viscous soil. At the same time, the dowel bar can be connected to the sheet pile inserting machine to replace pure manual operation, greatly improving work efficiency and safety.

[0020] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0022] Figure 1 This is the state one of the cleaning device for cleaning soft mud inside the cavity of hollow piles in this embodiment of the utility model when it descends during the mud removal process;

[0023] Figure 2 This is the second state of the cleaning device for cleaning soft mud inside the cavity of a hollow pile in this embodiment of the present invention when it descends during the mud removal process;

[0024] Figure 3 This is state three of the cleaning device for cleaning soft mud inside hollow pile cavities in this embodiment of the utility model when it descends during the mud removal process;

[0025] Figure 4 This is a schematic diagram of the state of the cleaning device for cleaning soft mud inside the cavity of a hollow pile during the mud removal process when the pile is lifted, according to an embodiment of the present utility model.

[0026] Figure 5 This is a three-dimensional schematic diagram of a cleaning device for cleaning soft mud inside the cavity of a hollow pile, according to an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the state of the cleaning device for cleaning soft mud inside the cavity of a hollow pile during the unloading process, according to an embodiment of this utility model.

[0028] Figure label:

[0029] Hollow pile 1; force transmission rod 2; lower limit part 3; upper limit part 4; mud removal cylinder 5; stop part 6; mud unloading pile 7. Detailed Implementation

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0035] In the specification and claims of this utility model, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and 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.

[0037] 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 according to the specific circumstances.

[0038] The following describes in detail, with reference to the accompanying drawings, a cleaning device for cleaning soft mud inside the cavity of a hollow pile according to an embodiment of the present invention.

[0039] A cleaning device for cleaning soft mud inside a hollow pile cavity according to an embodiment of the present invention includes: a force transmission rod 2, which moves along the axis of the hollow pile 1 inside the cavity of the hollow pile 1, and a lower limit part 3 and an upper limit part 4 are provided at intervals along the length direction of the force transmission rod 2; wherein, the lower limit part 3 is located at the bottom of the force transmission rod 2, and the radial dimensions of the lower limit part 3 and the upper limit part 4 are both larger than the radial dimension of the force transmission rod 2; a mud-collecting cylinder 5, which is sleeved on the force transmission rod 2 and is restricted to move within the space between the upper limit part 4 and the lower limit part 3; a stop part 6 is provided around the mud-collecting cylinder 5; when the force transmission rod 2 moves inside the cavity of the hollow pile 1, the mud-collecting cylinder 5 can move in the opposite direction of the movement of the force transmission rod 2 between the lower limit part 3 and the upper limit part 4 under the resistance of the soft mud or the weight of the mud-collecting cylinder 5 itself.

[0040] In other words, such as Figure 1 As shown, a removal device for cleaning soft mud inside a hollow pile cavity according to an embodiment of this utility model comprises at least a force transmission rod 2 and a mud-collecting cylinder 5. The force transmission rod 2 is made of structural steel, and its length can be changed as the excavation depth increases; preferably, the length is 3 meters, 6 meters, or 9 meters. The diameter of the force transmission rod 2 is preferably 80 mm to 150 mm. The force transmission rod 2 moves along the axis of the hollow pile 1 within the cavity. A lower limit part 3 and an upper limit part 4 are provided at intervals along the length direction of the force transmission rod 2. The lower limit part 3 is located at the bottom of the force transmission rod 2, and the radial dimensions of both the lower limit part 3 and the upper limit part 4 are larger than the radial dimension of the force transmission rod 2. The lower limit part 3 is made of steel and is connected to the bottom of the force transmission rod 2, preferably by welding, to increase the working strength during the cleaning of soft mud. The upper limit part 4 is made of steel plate with a wall thickness of 5 mm to 8 mm and is welded to the force transmission rod 2. The distance between the upper limit part 4 and the lower limit part 3 is greater than the height of the mud-collecting cylinder 5.

[0041] The mud sampling cylinder 5 is fitted onto the force transmission rod 2 and is restricted to move within the space between the upper limit part 4 and the lower limit part 3. The mud sampling cylinder 5 is made of steel plate with a wall thickness of 3mm to 5mm, and its height is 60cm to 150cm. The inner diameter of the mud sampling cylinder 5 is larger than the outer diameter of the force transmission rod 2, preferably at least 2mm larger, to facilitate the up-and-down movement of the mud sampling cylinder 5 along the length of the force transmission rod 2. The gap between the two forms a mud storage space. A stop part 6 is provided on the periphery of the mud sampling cylinder 5, located at 1 / 3 of the height of the mud sampling cylinder 5. The stop part 6 is made of flange, and the inner diameter of the flange matches that of the mud sampling cylinder 5.

[0042] like Figures 1 to 4As shown, when the dowel bar 2 moves within the cavity of the hollow pile 1, the mud sampling cylinder 5 can move in the opposite direction to the dowel bar 2 between the lower limit part 3 and the upper limit part 4 under the resistance of the soft soil or the weight of the mud sampling cylinder 5 itself. Specifically, the upper end of the dowel bar 2 can be connected to a sheet pile inserting machine (not shown in the attached diagram) to provide power, or it can be operated directly by hand by a worker, depending on the weight and size of the dowel bar 2 and the surrounding working environment. Taking the connection between the dowel bar 2 and the sheet pile inserter as an example, when removing mud, the sheet pile inserter drives the dowel bar 2 to move downward along the inner axis of the hollow pile 1. The lower limit part 3 is pushed into the soft mud inside the hollow pile 1 cavity. The soft mud inside the hollow pile 1 cavity rubs against the mud removal cylinder 5. The stop part 6 of the mud removal cylinder 5 is subjected to the friction and resistance of the soft mud and generates a reaction force. As the dowel bar 2 moves downward, the mud removal cylinder 5 is obstructed and moves in the opposite direction to the dowel bar 2, that is, it moves upward relative to the dowel bar 2 until it contacts the upper limit part 4 and is restricted to the position of the upper limit part 4. At this time, the upper limit part 4 and the mud removal cylinder 5 form a mud storage space with the opening facing downward. The soft mud inside the hollow pile 1 cavity is squeezed into the mud removal cylinder 5 as the dowel bar 2 continues to move downward. It enters from the lower inlet of the mud removal cylinder 5 and is stored in the mud storage space formed by the dowel bar 2, the mud removal cylinder 5 and the upper limit part 4. After advancing one stroke of the mud-collecting cylinder 5, the pile is lifted. As the dowel bar 2 moves upward, the mud-collecting cylinder 5, under its own weight, rapidly shifts downward relative to the dowel bar 2, moving to the lower limit part 3. There, it is confined and its downward opening closes. The soft mud in the storage space continues to rise with the dowel bar 2, eventually being carried out of the hollow pile 1 and lifted out of the ground. This completes one soft mud cleaning process.

[0043] This utility model discloses a cleaning device for removing soft mud from the cavity of hollow piles. Through the coordinated operation of the force transmission rod 2, mud-collecting cylinder 5, stop part 6, upper limit part 4, and lower limit part 3, mechanized dredging operation is achieved. When the force transmission rod 2 is pressed down, the reaction force of the soft mud on the stop part 6 pushes the mud-collecting cylinder 5 up to the upper limit part 4, forming a mud storage space with the opening facing downward. When the force transmission rod 2 descends, it automatically collects the soft mud in the cavity of the hollow pile 1. When the pile is lifted, the mud-collecting cylinder 5 automatically falls to the lower limit part 3 under the action of gravity, sealing the bottom entrance to prevent the soft mud from falling. Under the resistance of the soft mud or the action of the mud-collecting cylinder 5 itself, it moves in the opposite direction of the movement of the force transmission rod 2 between the lower limit part 3 and the upper limit part 4, completing the automatic mud collection. The entire process does not require manual intervention, significantly improving dredging efficiency and reducing labor intensity.

[0044] According to one embodiment of the present invention, it also includes a mud-discharging pile 7. When the force transmission rod 2 moves downward, the mud-discharging pile 7 generates resistance against the stop part 6.

[0045] In other words, such as Figure 6As shown, according to an embodiment of this utility model, a cleaning device for cleaning soft soil inside a hollow pile cavity also includes a mud-unloading pile 7. The mud-unloading pile 7 is buried next to or at the edge of the hollow pile 1 on the ground surface, in a place easily accessible by transport vehicles. The burial depth is sufficient to meet the reaction force when the sheet pile inserter pushes it downwards. The mud-unloading pile 7 is made of steel, preferably round steel, I-beams, angle iron, or other common materials used in the construction industry, making it convenient to obtain materials locally. During mud unloading, the stop part 6 on the mud-collecting cylinder 5 is brought close to the mud-unloading pile 7, so that the edge of the stop part 6 is locked onto the mud-unloading pile 7. When the force transmission rod 2 is pushed downwards, the mud-unloading pile 7 provides a reaction force to the mud-collecting cylinder 5, causing the mud-collecting cylinder 5 to separate from the lower limit part 3. The bottom of the mud-collecting cylinder 5 is opened, and the soil falls off the mud-collecting cylinder 5 under its own gravity, completing the mud unloading work.

[0046] After the mud is unloaded from the mud-removing cylinder 5, the above mud-removing and unloading work is repeated until the soft mud inside the hollow pile 1 is cleaned up and the design requirements are met.

[0047] This utility model discloses a cleaning device for removing soft mud from the cavity of hollow piles. Through the coordinated operation of the force transmission rod 2, mud-collecting cylinder 5, stop part 6, upper limit part 4, lower limit part 3, and unloading pile 7, mechanized dredging operations are achieved. When the force transmission rod 2 is pressed down, the reaction force of the soft mud on the stop part 6 pushes the mud-collecting cylinder 5 up to the upper limit part 4, forming a mud storage space with the opening facing downward. When the force transmission rod 2 descends, it automatically collects the soft mud in the cavity of the hollow pile 1. When the pile is lifted, the mud-collecting cylinder 5 automatically falls to the lower limit part 3 under the action of gravity, sealing the bottom inlet to prevent the soft mud from falling. During mud unloading, the unloading pile 7 limits the stop part 6 to complete the mechanical unloading. The entire process does not require manual intervention, significantly improving dredging efficiency and reducing labor intensity.

[0048] According to one embodiment of the present invention, the cross-sectional shape of the mud-taking cylinder 5 matches the cross-sectional shape of the inner cavity of the hollow pile 1.

[0049] In other words, the cross-sectional shape of the mud-collecting cylinder 5 matches the cross-sectional shape of the inner cavity of the hollow pile 1. When collecting mud, as the force transmission rod 2 moves down, it makes it easier for the surrounding soil to enter the mud storage space, and the collection of soft soil is more efficient.

[0050] According to one embodiment of the present invention, the cross-sectional shape of the lower limiting part 3 matches the cross-sectional shape of the mud-collecting cylinder 5.

[0051] In other words, by matching the cross-sectional shape of the lower limiting part 3 with the cross-sectional shape of the mud-collecting cylinder 5, the lower limiting part 3 and the mud-collecting cylinder 5 can better form a sealed bottom when the force transmission rod 2 moves upward, preventing soft mud in the mud storage space from falling out. More preferably, the cross-sectional shape of the lower limiting part 3 can be matched with the cross-sectional shape of the inner cavity of the hollow pile 1, so that the lower limiting part 3 can better guide the force transmission rod 2 when it moves downward, reducing resistance.

[0052] According to one embodiment of the present invention, the cross-sectional shape of the mud-taking cylinder 5 is circular, elliptical, fan-shaped, semi-circular, regular polygon, irregular polygon, or rounded polygon.

[0053] In other words, the cross-section of the inner cavity of the hollow pile 1 varies depending on the design requirements. In order to facilitate mud removal, the cross-sectional shape of the mud removal cylinder 5 needs to be designed to match the cross-sectional shape of the hollow pile 1, such as a circle, ellipse, fan shape, semi-circle, regular polygon, irregular polygon or rounded polygon, etc.

[0054] According to one embodiment of the present invention, the lower limiting part 3 is conical, with the tip of the cone facing into the cavity of the hollow pile 1.

[0055] In other words, the lower limit part 3 can be set in a cone shape, with the tip of the cone facing the cavity of the hollow pile 1. That is, when the lower limit part 3 moves downward, the surface facing the soil is designed as an inwardly contracting slope to reduce resistance and avoid the pile getting stuck.

[0056] According to one embodiment of the present invention, the force transmission rod 2 is made of I-beam.

[0057] According to another embodiment of the present invention, the inner diameter of the mud-taking cylinder 5 is about 2 mm to 10 mm larger than the outer diameter of the force transmission rod 2.

[0058] In other words, such as Figure 5 As shown, the force transmission rod 2 is designed as an I-beam structure, with a height of approximately 80mm to 120mm. Compared to a round bar structure, the I-beam structure provides a larger internal gap when fitted with the mud sampling cylinder 5, thus increasing the capacity of the mud storage space. Simultaneously, the inner diameter of the mud sampling cylinder 5 is approximately 2mm to 10mm larger than the outer diameter of the force transmission rod 2 (referring to the outer diameter at its maximum point), facilitating the up-and-down movement of the mud sampling cylinder 5 along the force transmission rod 2.

[0059] According to one embodiment of the present invention, the cross-section of the stop portion 6 matches the cross-section of the inner cavity of the hollow pile 1.

[0060] In other words, by matching the cross-section of the stop part 6 with the cross-section of the inner cavity of the hollow pile 1, the stop part 6 can better match the shape of the inner cavity of the hollow pile 1 when the force transmission rod 2 moves down, thereby reducing resistance.

[0061] According to one embodiment of the present invention, the distance between the upper limit part 4 and the lower limit part 3 is greater than the height of the mud-collecting cylinder 5 by more than 20cm.

[0062] In other words, in order to facilitate the movement of the mud-collecting cylinder 5 between the lower limit part 3 and the upper limit part 4, the distance between the upper limit part 4 and the lower limit part 3 needs to be greater than the height of the mud-collecting cylinder 5 by more than 20cm, preferably 30cm, so as to facilitate quick mud collection and unloading.

[0063] This utility model discloses a cleaning device for removing soft mud from the cavity of hollow piles. Through the coordinated operation of the force transmission rod 2, mud-collecting cylinder 5, stop part 6, upper limit part 4, lower limit part 3, and unloading pile 7, mechanized dredging operations are achieved. When the force transmission rod 2 is pressed down, the reaction force of the soft mud on the stop part 6 pushes the mud-collecting cylinder 5 up to the upper limit part 4, forming a mud storage space with the opening facing downward. When the force transmission rod 2 descends, it automatically collects the soft mud in the cavity of the hollow pile 1. When the pile is lifted, the mud-collecting cylinder 5 automatically falls to the lower limit part 3 under the action of gravity, sealing the bottom inlet to prevent the soft mud from falling. During mud unloading, the unloading pile 7 limits the stop part 6 to complete the mechanical unloading. The entire process does not require manual intervention, significantly improving dredging efficiency and reducing labor intensity.

[0064] This utility model discloses a simple and easy-to-manufacture device for cleaning soft soil inside hollow pile cavities. It is convenient to operate, safe, reliable, and allows for rapid construction, shortening the construction period, saving construction costs, reducing the labor intensity of construction workers, effectively alleviating physical exertion, and improving work efficiency. It completely solves the problem of cleaning soft soil inside hollow pile cavities for construction units.

[0065] Of course, for those skilled in the art, the other structures and working principles of the cleaning device used to clean the soft mud inside the cavity of hollow piles are understandable and achievable, and will not be described in detail in this utility model.

[0066] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A device for cleaning soft mud inside the cavity of hollow piles, characterized in that, include: A force transmission rod (2) moves along the axis of the hollow pile (1) within the cavity of the hollow pile (1). A lower limiting part (3) and an upper limiting part (4) are provided at intervals along the length direction of the force transmission rod (2). The lower limiting part (3) is located at the bottom of the force transmission rod (2), and the radial dimensions of both the lower limiting part (3) and the upper limiting part (4) are larger than the radial dimension of the force transmission rod (2). A mud-collecting cylinder (5) is sleeved on the force transmission rod (2) and is restricted to move within the space between the upper limit part (4) and the lower limit part (3); a stop part (6) is provided around the mud-collecting cylinder (5); When the force transmission rod (2) moves inside the hollow pile (1), the mud sampling cylinder (5) can move in the opposite direction to the force transmission rod (2) between the lower limit part (3) and the upper limit part (4) under the resistance of the soft soil or the weight of the mud sampling cylinder (5).

2. The cleaning device for cleaning soft mud inside the cavity of a hollow pile according to claim 1, characterized in that, It also includes a mud-discharging pile (7), which generates resistance to the stop part (6) when the force transmission rod (2) moves downward.

3. The cleaning device for cleaning soft mud inside the cavity of a hollow pile according to claim 1, characterized in that, The cross-sectional shape of the mud-collecting cylinder (5) matches the cross-sectional shape of the inner cavity of the hollow pile (1).

4. A cleaning device for removing soft mud from the cavity of a hollow pile according to claim 3, characterized in that, The cross-sectional shape of the lower limiting part (3) matches the cross-sectional shape of the mud sampling cylinder (5).

5. A cleaning device for removing soft mud from the cavity of a hollow pile according to claim 4, characterized in that, The cross-sectional shape of the mud sampling tube (5) is circular, elliptical, fan-shaped, semi-circular, regular polygon, irregular polygon, or rounded polygon.

6. A cleaning device for removing soft mud from the cavity of a hollow pile according to claim 1, characterized in that, The lower limit part (3) is conical, with the tip of the cone facing into the cavity of the hollow pile (1).

7. The cleaning device for cleaning soft mud inside the cavity of a hollow pile according to claim 1, characterized in that, The force transmission rod (2) is made of I-beams.

8. A cleaning device for removing soft mud from the cavity of a hollow pile according to claim 7, characterized in that, The inner diameter of the mud sampling cylinder (5) is about 2 mm to 10 mm larger than the outer diameter of the force transmission rod (2).

9. A cleaning device for removing soft mud from the cavity of a hollow pile according to claim 1, characterized in that, The cross-section of the stop (6) matches the cross-section of the inner cavity of the hollow pile (1).

10. A cleaning device for removing soft mud from the cavity of a hollow pile according to claim 1, characterized in that, The distance between the upper limit part (4) and the lower limit part (3) is more than 20cm greater than the height of the mud-collecting cylinder (5).

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