A steel sheet pile pulling and soil cleaning device

Abstract

The present application relates to the field of soil cleaning device, disclose a kind of steel sheet pile pulling out pile synchronous soil cleaning device, comprising: two parallelly arranged bottom plate, respectively for being arranged in the two sides of steel sheet pile;Each bottom plate is equipped with linear module along the length direction;The sliding table of each linear module is connected with telescopic mechanism by carrier plate;Each telescopic mechanism is communicated with the scraper for scraping clay of steel sheet pile;Telescopic mechanism is formed with the cavity of variable volume inside;Telescopic mechanism is communicated with scraper.This application uses the telescopic mechanism of variable volume cavity, when the scraper moves up, automatically compresses the cavity, improves the liquid pressure, can strengthen stubborn clay flushing, through moving tube, sleeve and spring to realize compression energy storage, drive scraper fast down, use relative speed superposition to improve scraping capacity, and cooperate with baffle impact vibration and remove soil, reduce clay accumulation, can flexibly adjust the position of scraper, guarantee construction stability, effectively improve soil cleaning efficiency, equipment adaptability and continuous operation reliability.

Description

Technical Field

[0001] This invention relates to the field of soil removal equipment technology, and more specifically, to a soil removal device for simultaneous extraction of sheet piles. Background Technology

[0002] Steel sheet piles are narrow, elongated plate-shaped components made of high-strength steel, formed by hot rolling or cold bending. They are interconnected through a unique interlocking structure on their sides to form a continuous, sealed underground retaining wall or water barrier. This technology has been industrially applied since the early 20th century. With its advantages such as fast construction speed, reusability, adaptability to complex geological conditions, and environmental friendliness, it has become an irreplaceable temporary or permanent retaining structure system in projects such as foundation pit support, embankment reinforcement, wharf construction, and underground utility tunnels. Its cross-sectional forms have evolved from U-shaped, Z-shaped, and H-shaped to composite sections, gradually improving its bending stiffness and water-stopping performance.

[0003] According to the actual construction situation on site, after the steel sheet piles are removed from the water-rich strata, a large amount of clay (thickness can reach 5-10cm) often adheres to the surface of the piles. Traditional manual soil removal is inefficient (time for a single pile is ≥10 minutes). For example, for a 1.6km ultra-long support section, more than 2,000 steel sheet piles need to be recovered, and the soil removal process has become a bottleneck restricting the construction period. Summary of the Invention

[0004] This invention provides a device for simultaneous soil removal during sheet pile extraction, which solves the technical problem of low cleaning efficiency in related technologies.

[0005] This invention provides a device for simultaneous soil removal during sheet pile extraction, comprising: Two parallel base plates are used to be arranged on both sides of the sheet pile; each base plate is equipped with a linear module along its length. Each linear module has a telescopic mechanism connected to its slide via a carrier plate; each telescopic mechanism is connected to a scraper for scraping clay from the sheet pile. The two scrapers are located on both sides of the sheet pile, and each scraper forms a shape that matches the profile of the sheet pile on the side facing the sheet pile. The telescopic mechanism has an internal cavity with variable volume, and an inlet is provided on the telescopic mechanism; the telescopic mechanism is connected to the scraper through a connecting shell. The scraper is provided with spray holes, which are set along the outline of the scraper for spraying liquid toward the steel sheet pile; When the scraper moves as the sheet pile moves upward, the volume of the cavity decreases accordingly, which pressurizes the liquid in the cavity and increases the hydraulic pressure ejected from the nozzle, thereby enhancing the washing and wetting effect on the clay surface of the sheet pile.

[0006] As a further optimization of the present invention, the telescopic mechanism includes a mounting frame, a sleeve, a movable tube, and a spring. The carrier plate is connected to the sleeve through the mounting frame. One end of the sleeve forms an opening for the movable tube to extend into. One end of the movable tube slides into the inside of the sleeve and is connected to the sleeve through the spring. The movable tube is connected to the scraper through the connecting shell.

[0007] As a further optimization of the present invention, the sleeve is connected to a liquid inlet pipe through a one-way valve for supplying liquid to the inside of the sleeve. The liquid enters the scraper through the moving pipe and is sprayed out through the spray hole.

[0008] As a further optimization of the present invention, when the scraper moves upward under the action of the sheet pile, the length of the moving tube extending into the casing increases, compressing the spring and pressurizing the liquid in the cavity to increase the spraying force of the nozzle.

[0009] As a further optimization of the present invention, anchor rods are provided at both ends of each base plate to fix the base plate to the construction ground.

[0010] As a further optimization of the present invention, a positioning pin is slidably sleeved on the carrier plate, and multiple positioning holes are opened on the bottom plate along its length direction. The insertion end of the positioning pin is used to insert into the positioning holes at different positions to adjust and lock the position of the carrier plate.

[0011] As a further optimization of the present invention, a limiting plate is installed on the mounting bracket to limit the lowest position of the scraper.

[0012] As a further optimization of the present invention, a baffle is installed above the scraper on the sleeve, which is used to contact the scraper when the scraper moves upward, and is used to limit the scraper and prevent impact vibration.

[0013] As a further optimization of the present invention, the scraper moves rapidly downward after impacting the baffle under the combined action of the spring's restoring force and the liquid pressure in the cavity, thereby increasing the relative speed of movement with the sheet pile.

[0014] A liquid inlet pipe is connected to the casing via a one-way valve for supplying liquid into the casing. The liquid enters the scraper through the moving pipe and is finally ejected from the nozzle. The one-way valve prevents liquid backflow, ensuring the reliability of the pressurization effect.

[0015] As the scraper moves upward under the influence of the sheet pile, the length of the moving tube extending into the casing increases, compressing the spring. Simultaneously, the effective volume of the cavity decreases, compressing and pressurizing the internal liquid, thereby increasing the injection pressure of the nozzle. This process requires no additional power or control, and features a simple structure and rapid response.

[0016] As a further optimization of the present invention, the linear module is a guide rail.

[0017] The beneficial effects of this invention are as follows: 1. The steel sheet pile extraction and simultaneous soil removal device of the present invention, by setting a telescopic mechanism with variable cavity volume, and by causing the scraper to move up the steel sheet pile to compress the cavity and automatically increase the hydraulic pressure, can enhance the flushing and wetting effect without external control or additional power when encountering stubborn clay, thereby improving soil removal efficiency and adaptability.

[0018] 2. The steel sheet pile extraction and soil removal device of the present invention, through the cooperative structure of moving pipe, sleeve and spring, realizes the compression and energy storage of spring while the scraper moves up to compress the cavity, and then uses the spring restoring force and liquid pressure to drive the scraper to move down rapidly, so that the scraper and the steel sheet pile form a relative velocity superposition, which enhances the scraping effect and further improves the cleaning capacity.

[0019] 3. The steel sheet pile extraction and soil removal device of the present invention, by setting a baffle above the casing, causes the scraper to impact and vibrate when it reaches the limit position, which promotes the detachment of the clay attached to the scraper, reduces the phenomenon of cleaning failure caused by clay accumulation, and improves the stability and durability of the device in continuous operation.

[0020] 4. The steel sheet pile extraction and soil removal device of the present invention, through the adjustment structure of the straight module on the base plate and the positioning pin and positioning hole, can flexibly adjust the working position of the scraper to adapt to steel sheet piles of different specifications or different extraction positions. At the same time, the anchor rod ensures the stability of the whole device during construction, and improves the versatility and on-site adaptability of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a steel sheet pile extraction and simultaneous soil removal device proposed in this invention.

[0022] Figure 2 This is a partial structural diagram of a steel sheet pile extraction and simultaneous soil removal device proposed in this invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the casing in a steel sheet pile extraction and simultaneous soil removal device proposed in this invention.

[0024] Figure 4 This is a bottom view of the scraper structure in a steel sheet pile extraction and simultaneous soil removal device proposed in this invention.

[0025] In the picture: 1. Base plate; 101. Positioning holes; 2. Anchor bolts; 3. Linear module; 4. Carrier plate; 5. Telescopic mechanism; 51. Mounting bracket; 52. Sleeve; 53. Moving tube; 54. Spring; 6. Scraper; 601. Spray nozzle; 7. Connecting shell; 8. Check valve; 9. Liquid inlet pipe; 10. Positioning pin; 11. Limit plate; 12. Baffle. Detailed Implementation

[0026] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0027] Example 1 like Figures 1 to 4 As shown, this embodiment of the invention provides a simultaneous soil removal device for sheet pile extraction, comprising two parallel base plates 1, respectively arranged on both sides of the sheet pile. Anchor rods 2 are inserted at both ends of each base plate 1 to fix the base plate 1 to the construction ground, thereby improving the stability of the device during pile extraction and soil removal.

[0028] Each base plate 1 is equipped with a linear module 3 along its length. As a preferred, rather than limiting, approach, the linear module 3 is in the form of a guide rail. A telescopic mechanism 5 is connected to the slide of the linear module 3 via a carrier plate 4. The carrier plate 4 is fixedly connected to the slide and can move along the length of the base plate 1 with the slide, thereby adjusting the soil clearing position to accommodate sheet piles in different locations.

[0029] Each telescopic mechanism 5 is connected to a scraper 6. The two scrapers 6 are located on both sides of the sheet pile, and each scraper 6 is shaped to match the profile of the sheet pile on the side facing the sheet pile, so as to scrape the clay on the surface of the pile when the sheet pile is pulled upward.

[0030] The telescopic mechanism 5 forms a cavity with an adjustable volume, and has an inlet for injecting liquid (e.g., water) into the cavity. The telescopic mechanism 5 is connected to the scraper 6 via a connecting shell 7, allowing the liquid in the cavity to be transported to the scraper 6.

[0031] The scraper 6 has spray holes 601. These spray holes 601 are set along the contour of the scraper 6 (i.e. the contoured edge that contacts the sheet pile) and are used to spray liquid toward the surface of the sheet pile to wet and soften the clay and assist in scraping.

[0032] When the scraper 6 is driven upward by the friction or resistance generated by the upward movement of the sheet pile, the volume of the telescopic mechanism 5 decreases accordingly, compressing and pressurizing the liquid in the cavity, thus automatically increasing the hydraulic pressure ejected from the nozzle 601. This allows for automatic enhancement of flushing and wetting effects without external control when encountering tightly adhered, thick clay, thereby improving soil removal efficiency.

[0033] To achieve the aforementioned telescopic and pressurizing functions, as a preferred structure, the telescopic mechanism 5 specifically includes a mounting bracket 51, a sleeve 52, a moving tube 53, and a spring 54. Wherein: Carrier plate 4 is fixedly connected to sleeve 52 via mounting bracket 51; One end of the sleeve 52 is formed into an opening for the movable tube 53 to extend into; One end of the movable tube 53 slides into the inside of the sleeve 52 and is connected to the sleeve 52 by the spring 54; The other end of the moving tube 53 is connected to the scraper 6 through the connecting shell 7.

[0034] Based on this, a liquid inlet pipe 9 is connected to the sleeve 52 via a one-way valve 8 for supplying liquid into the sleeve 52. The liquid enters the scraper 6 through the moving pipe 53 and is finally sprayed out through the nozzle 601. The one-way valve 8 prevents liquid backflow and ensures the reliability of the pressurization effect.

[0035] When the scraper 6 moves upward under the influence of the sheet pile, the length of the moving tube 53 extending into the sleeve 52 increases, compressing the spring 54. At the same time, the effective volume of the cavity decreases, compressing and pressurizing the internal liquid, thereby increasing the injection force of the nozzle 601. This process requires no additional power or control, and has a simple structure and rapid response.

[0036] In addition, to accommodate sheet piles in different positions, this embodiment also includes a position adjustment structure: a positioning pin 10 is slidably sleeved on the carrier plate 4, and multiple positioning holes 101 are formed on the bottom plate 1 along its length. When the carrier plate 4 is moved to a suitable position by the linear module 3, the insertion end of the positioning pin 10 is inserted into the corresponding positioning hole 101 to lock the position of the carrier plate 4, thereby stabilizing the horizontal position of the scraper 6 relative to the sheet pile.

[0037] Example 2 Based on Example 1, this example further optimizes the movement range and vibration effect of scraper 6.

[0038] To prevent the scraper 6 from exceeding its reasonable stroke during downward reset and affecting the normal scraping effect, a limit plate 11 is installed on the mounting frame 51. This limit plate 11 is used to limit the lowest position of the scraper 6, ensuring that the scraper 6 is always within the effective working range.

[0039] Meanwhile, to improve the removal of clay from the surface of the scraper 6 and prevent clay accumulation from reducing cleaning capacity, a baffle 12 is installed above the sleeve 52 of the scraper 6 in this embodiment. When the scraper 6 is driven upward to the baffle 12 due to the upward movement of the sheet pile, the scraper 6 comes into contact with the baffle 12. On the one hand, it acts as an upward limit, and on the other hand, it generates impact vibration, causing the clay attached to the scraper 6 to fall off, reducing the adhesion of clay on the scraper 6, which is beneficial for continuous soil cleaning.

[0040] More advantageously, after the scraper 6 impacts the baffle 12, it will quickly move downwards to reset under the combined action of the restoring force of the spring 54 and the liquid pressure inside the cavity. At this time, the sheet pile is still being pulled upwards, so the relative velocity superposition between the downward movement of the scraper 6 and the upward movement of the sheet pile makes the scraper 6 produce a stronger scraping effect on the surface of the sheet pile, further improving the soil removal effect.

[0041] This invention transforms the mechanical resistance during pile extraction into automatic pressurized flushing and vibration cleaning, significantly improving cleaning efficiency without adding an extra power source. It is particularly suitable for construction scenarios requiring the recovery of large quantities of sheet piles, such as water-rich strata and ultra-long support sections.

[0042] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A device for simultaneous soil removal during sheet pile extraction, characterized in that, include: Two parallel base plates (1) are used to be arranged on both sides of the sheet pile; each base plate (1) is equipped with a straight module (3) along the length direction. Each linear module (3) has a telescopic mechanism (5) connected to its slide via a carrier plate (4); each telescopic mechanism (5) is connected to a scraper (6) for scraping clay from the sheet pile. The telescopic mechanism (5) has a cavity with an adjustable volume; the telescopic mechanism (5) is connected to the scraper (6); The scraper (6) has a spray hole (601) for spraying liquid toward the sheet pile; When the scraper (6) moves due to the upward movement of the sheet pile, the volume of the cavity decreases accordingly, which increases the pressure on the liquid in the cavity and increases the hydraulic pressure ejected from the nozzle (601) to enhance the washing and wetting effect on the clay on the surface of the sheet pile.

2. The steel sheet pile extraction and simultaneous soil removal device according to claim 1, characterized in that: The telescopic mechanism (5) includes a mounting bracket (51), a sleeve (52), a moving tube (53), and a spring (54). The carrier plate (4) is connected to the sleeve (52) through the mounting bracket (51). One end of the sleeve (52) forms an opening for the moving tube (53) to extend into. One end of the moving tube (53) slides into the sleeve (52) and is connected to the sleeve (52) through the spring (54). The moving tube (53) is connected to the scraper (6) through the connecting shell (7).

3. The steel sheet pile extraction and simultaneous soil removal device according to claim 2, characterized in that: The sleeve (52) is connected to the liquid inlet pipe (9) through the one-way valve (8) for supplying liquid to the inside of the sleeve (52). The liquid enters the scraper (6) through the moving pipe (53) and is sprayed out through the spray hole (601).

4. The steel sheet pile extraction and simultaneous soil removal device according to claim 2, characterized in that: When the scraper (6) moves upward under the action of the sheet pile, the length of the moving tube (53) extending into the sleeve (52) increases, compressing the spring (54) and pressurizing the liquid in the cavity to increase the spraying force of the nozzle (601).

5. The steel sheet pile extraction and simultaneous soil removal device according to claim 1, characterized in that: Anchor rods (2) are installed at both ends of each base plate (1) to fix the base plate (1) to the construction ground.

6. The steel sheet pile extraction and simultaneous soil removal device according to claim 1, characterized in that: A positioning pin (10) is slidably sleeved on the carrier plate (4), and multiple positioning holes (101) are opened on the base plate (1) along its length direction. The insertion end of the positioning pin (10) is used to insert into the positioning holes (101) at different positions to adjust and lock the position of the carrier plate (4).

7. A steel sheet pile extraction and simultaneous soil removal device according to claim 2, characterized in that: A limiting plate (11) is installed on the mounting bracket (51) to limit the lowest position of the scraper (6).

8. A steel sheet pile extraction and simultaneous soil removal device according to claim 2, characterized in that: The sleeve (52) is equipped with a baffle (12) above the scraper (6) for contacting the scraper (6) when it moves upward, and for limiting the scraper (6) and impact vibration.

9. A steel sheet pile extraction and simultaneous soil removal device according to claim 8, characterized in that: Under the combined effect of the restoring force of the spring (54) and the liquid pressure in the cavity, the scraper (6) moves rapidly downward after impacting the baffle (12), increasing the relative speed with the steel sheet pile.

10. A steel sheet pile extraction and simultaneous soil removal device according to claim 1, characterized in that: The linear module (3) is a guide rail.

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