A device for cleaning sediment from embedded rock piles

Abstract

This invention relates to the field of pile foundation sediment cleaning devices, and discloses a sediment cleaning device for embedded rock piles, comprising: a first support frame; a vertical through hole provided on the horizontal plate of the first support frame, through which a first guide tube passes; a second guide tube fixed to the upper side wall of the first guide tube and sealed with a transverse sealing plate, the top side wall of the first guide tube also being provided with a slurry return pipe; a third guide tube located above an adjusting plate, the second guide tube vertically passing through the transverse sealing plate and rotatably extending into the interior of the first guide tube; a fourth support frame fixed to the upper surface of the adjusting plate; and an adjusting component for rotating the first guide tube. The device of this invention rotates the second guide tube through the adjusting component, and in conjunction with the threaded section outside the second guide tube and the first support frame, enables continuous position adjustment of the air-lift reverse circulation device relative to the embedded rock pile hole, ensuring the reliability of the air-lift reverse circulation device in cleaning sediment.

Description

Technical Field

[0001] This invention relates to the field of pile foundation sediment cleaning devices, specifically to a sediment cleaning device for rock-embedded piles. Background Technology

[0002] In recent years, with the rapid development of my country's transportation infrastructure, the construction of bridges, highways, civil buildings, ports, and wharves has required increasingly deeper pile foundations. However, in actual construction, most pile foundations will encounter uneven soil layers, requiring the piles to be embedded to a certain depth to ensure project safety. Currently, the main problem is the use of traditional rotary drilling rigs. This method leads to excessively thick sediment at the bottom of the embedded piles, causing a decrease in the pile's bearing capacity, resulting in ground settlement and uneven settlement, which in turn affects the progress of the entire project and causes significant economic losses to the construction unit. Traditional methods for cleaning the sediment at the pile bottom involve using mud slurry for wall protection and circulating cleaning of drilling cuttings for waterproofing. However, mud slurry circulation has many drawbacks: high pollution, low efficiency, slow construction period, low quality and safety assurance rate, and the extraction of soil for slurry production impacts soil and water conservation.

[0003] Chinese patent CN209053099U discloses a sediment cleaning device for rock-embedded piles at wharves, applicable to pile holes with a sediment surface at the bottom. The device includes: a sedimentation tank with an outlet on its upper side wall, the outlet communicating with the pile hole; a conduit open at both ends, its lower end extending into the pile hole at a distance of 300-400mm from the sediment surface, its upper end extending to the sedimentation tank and facing its inlet; and an air supply pipe inserted within the conduit, the lower end of the air supply pipe open and higher than the lower end of the conduit, the air supply pipe filled with compressed air, and the lower part of the air supply pipe having several rows of holes. This design allows water filtered from the sedimentation tank to be introduced into the pile hole, forming a self-circulating system and conserving water resources.

[0004] However, in actual use, the cleaning device is set in a relatively fixed position, which is not easy to adjust. As the mud is discharged, the thickness of the sediment at the bottom of the pit decreases, and the water outlet pipe cannot keep up. The distance between the pipe opening and the sediment surface will gradually increase, and a stable liquid flow cannot be formed in the guide pipe, resulting in the failure of air-lift reverse circulation cleaning. When the cleaning device is inserted too deeply, it is easy to damage the mud surface at the bottom of the pit, causing the borehole wall to become unstable, and in severe cases, it may even cause the borehole wall to collapse. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rock-embedded pile sediment cleaning device. In the prior art, the rock-embedded pile sediment cleaning device is relatively fixed in position, which causes the water outlet pipe to be unable to follow synchronously. The distance between the pipe opening and the sediment surface will gradually increase, resulting in the inability to form a stable liquid flow in the pipe. If the cleaning device is inserted too deeply, it will cause the hole wall to be unstable.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a rock-embedded pile sediment cleaning device, comprising:

[0007] The first support frame is a U-shaped structure with its opening facing downwards; the horizontal plate of the first support frame is provided with a vertical through hole, the first guide tube passes through the vertical through hole on the horizontal plate, the outer wall of the first guide tube is provided with a threaded section, and the inner wall of the through hole is provided with an internal thread that matches the threaded section.

[0008] It also includes a sealing plate fixed to the upper side wall of the first conduit, and uses the sealing plate to seal the upper opening of the first conduit. The top side wall of the first conduit is also provided with a slurry return pipe. It also includes a second conduit located above the adjustment plate. The second conduit extends vertically through the sealing plate and can be rotatably extended into the interior of the first conduit. The top side wall of the second conduit has an air inlet, and the air inlet pipe is horizontally facing the air inlet and sends high-pressure gas into the second conduit.

[0009] It also includes a second support frame fixed to the upper surface of the adjustment plate. The second support frame is U-shaped with the opening facing downwards. A vertically downward drive motor is provided on the top of the inner wall of the second support frame. The output shaft of the drive motor is fixedly connected to the second conduit.

[0010] It also includes an adjustment assembly for rotating the first conduit. The adjustment assembly is disposed between the first support frame and the adjustment plate, and includes a horizontal adjustment disc fixedly sleeved on the outside of the first conduit. The adjustment disc drives the first conduit to rotate.

[0011] Specifically, the adjusting disk is a gear disk, and a vertically arranged stepper motor is also provided on the horizontal plate next to the adjusting disk. The output shaft of the stepper motor is provided with an axially vertical active gear disk. A drive ring is also provided outside the stepper motor and the adjusting disk. The inner wall of the drive ring is provided with transmission teeth that mesh with the active gear disk and the adjusting disk respectively. A sliding support rod is also provided at the lower part of the drive ring, so that the drive ring can be rotatably embedded in the circular rotating track on the horizontal plate.

[0012] Specifically, the upper surface of the horizontal plate is provided with limiting rods at both ends. The limiting rods include limiting posts set on the horizontal plate. The upper end of the limiting post is provided with a threaded section. A limiting hole is opened at the corresponding position on the adjusting plate. The threaded section on the limiting post passes through the limiting hole and is screwed into the nut.

[0013] Specifically, a first sliding plate is fixed on the sealing plate, the first sliding plate is sleeved on the outside of the second conduit and is rotatably connected to the second conduit; the longitudinal cross-section of the first sliding plate is U-shaped with the horizontal direction facing the second conduit, the upper horizontal plate of the first sliding plate is connected to the outer wall of the second conduit above the inflation hole; the lower horizontal plate of the first sliding plate is fixedly connected to the sealing plate and is also connected to the outer wall of the second conduit below the inflation hole; the air intake tube passes through the first sliding plate and pumps high-pressure gas into the inner cavity of the first sliding plate.

[0014] Specifically, the lower end face of the second conduit is higher than the lower end face of the first conduit, and a spiral lifting blade is wound around the outer wall of the portion of the second conduit located inside the first conduit.

[0015] In particular, the upper surface of the first slide plate is also provided with several vertical support legs. The upper end of the support leg is provided with a protective sleeve that is fixedly connected to the lower surface of the drive motor. The protective sleeve is sleeved outside the output shaft of the drive motor, and a clearance groove for inserting an air pipe is formed between adjacent support legs.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention rotates the second guide tube by adjusting the component, and in conjunction with the threaded section on the outside of the second guide tube and the first support frame, it can realize continuous position adjustment of the air-lift reverse circulation device relative to the rock-embedded pile hole, ensuring the reliability of the air-lift reverse circulation device in air-lift reverse circulation slag removal, adapting to various construction conditions, reducing the slag removal efficiency of the rock-embedded pile hole, effectively reducing the possibility of hole collapse, avoiding construction accidents, and effectively improving construction safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the main structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the first support frame and adjustment plate structure.

[0020] Figure 4 This is a schematic diagram of the adjustment component and drive ring structure.

[0021] Figure 5 This is a schematic diagram of the air-lift reverse circulation component.

[0022] Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle.

[0023] The labels in the diagram are as follows: First support frame—1; Horizontal plate—11; Limiting rod—12; First guide tube—21; Threaded section—22; Second guide tube—23; Sealing plate—24; First sliding plate—241; Support leg—242; Protective sleeve—243; Inflation hole—25; Air duct—26; Spiral lifting blade—27; Adjusting plate—3; Limiting hole—31; Nut—32; Second support frame—4; Drive motor—41; Adjusting disc—51; Stepper motor—52; Active gear disc—53; Drive ring—54; Sliding support rod—55. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, so as to provide a better understanding of the concept of the present invention, the technical problem solved, the technical features constituting the technical solution, and the technical effects brought about.

[0025] like Figures 1-6 As shown, a rock-embedded pile sediment cleaning device includes:

[0026] The first support frame 1 is a U-shaped structure with its opening facing downwards; the horizontal plate 11 of the first support frame 1 is provided with a vertical through hole, the first guide tube 21 passes through the vertical through hole on the horizontal plate 11, the outer wall of the first guide tube 21 is provided with a threaded section 22, and the inner wall of the through hole is provided with an internal thread that matches the threaded section 22.

[0027] It also includes a sealing plate 24 fixed to the upper side wall of the first conduit 21, and uses the sealing plate 24 to seal the upper opening of the first conduit 21. The top side wall of the first conduit 21 is also provided with a slurry return pipe. It also includes a second conduit 23 located above the adjusting plate 3. The second conduit 23 vertically passes through the sealing plate 24 and can be rotatably extended into the interior of the first conduit 21. The top side wall of the second conduit 23 has an air inlet 25. The air inlet pipe 26 is horizontally oriented toward the air inlet 25 and sends high-pressure gas into the second conduit 23.

[0028] It also includes a second support frame 4 fixed to the upper surface of the adjustment plate 3. The second support frame 4 is a U-shaped opening facing downwards. The top of the inner wall of the second support frame 4 is provided with a vertically downward drive motor 41. The output shaft of the drive motor 41 is fixedly connected to the second conduit 23.

[0029] It also includes an adjustment assembly for rotating the first conduit 21. The adjustment assembly is disposed between the first support frame 1 and the adjustment plate 3, and includes a horizontal adjustment disc 51 fixedly sleeved on the outside of the first conduit 21. The first conduit 21 is driven to rotate through the adjustment disc 51.

[0030] The main principle of this invention is as follows: by rotating the adjusting disc 51, the first guide tube 21 is driven to rotate. In conjunction with the threaded section on the outer wall of the first guide tube 21 and the vertical through hole of the internal thread on the horizontal plate 11, the first guide tube 21 can move up or down continuously on the horizontal plate 11. Thus, the first guide tube 21 and the second guide tube 23 serve as the mixing liquid channel of the gas lift reverse circulation component, and the depth of the sediment layer inserted into the bottom of the rock-socketed pile hole is adjusted synchronously. High-pressure gas is pumped into the second conduit 23 through the air inlet pipe 26 and the air inlet 25. The high-pressure gas enters the internal cavity of the second conduit 23 and mixes with the sediment at the bottom of the first conduit 21 to form a low-density mixed solution. Under the action of the pressure difference between the inside and outside of the first conduit 21, the mixed solution rises along the internal cavity of the first conduit 21. The adjustment component ensures that the bottom of the first conduit 21 is always near the sediment layer to be cleaned. The silty sand, silt, medium and coarse sand and other sediments at the bottom of the rock-embedded pile hole rise under the negative pressure at the bottom of the first conduit 21, thereby forming a relatively stable reverse circulation liquid flow in the cavity between the first conduit 21 and the second conduit 23. The sediment mixed solution is then discharged through the slurry return pipe, thereby realizing the stepless and continuous position adjustment of the air-lift reverse circulation device, namely the first conduit 21 and the second conduit 23, relative to the rock-embedded pile hole, ensuring the reliability of the air-lift reverse circulation device for cleaning sediment.

[0031] In a preferred embodiment, the adjusting disk 51 is a gear disk, and a vertically arranged stepper motor 52 is also provided on the horizontal plate 11 next to the adjusting disk 51. The output shaft of the stepper motor 52 is provided with an axially vertical active gear disk 53. A drive ring 54 is also provided outside the stepper motor 52 and the adjusting disk 51. The inner wall of the drive ring 54 is provided with transmission teeth that mesh with the active gear disk 53 and the adjusting disk 51 respectively. A sliding support rod 55 is also provided at the lower part of the drive ring 54, so that the drive ring can be rotatably embedded in the circular rotating track on the horizontal plate 11.

[0032] This embodiment provides a specific structure for an adjustment component. The adjustment disk 51 is a gear disk, which works in conjunction with an axially vertical active gear disk 53 mounted on the output shaft of a stepper motor 52, and a drive ring 54 sleeved around the adjustment disk and the active gear disk 53 to transmit rotational force. Specifically, when the stepper motor 52 is started, it outputs rotational force, causing the drive ring 54 to rotate within a circular rotating track on the horizontal plate 11. The vertical teeth on the inner wall of the drive ring 54 drive the main adjustment disk 51, which meshes with the drive ring 54, to rotate, thereby causing the first guide tube 21 to rotate as well. This, combined with the threads on the outer wall of the first guide tube 21 and the vertical internal threaded hole on the horizontal plate 11, allows for stepless continuous upward or downward movement of the first guide tube 21. It should be noted that the height of the adjustment disk 51 needs to be much greater than the height of the drive ring 54 to ensure sufficient upward and downward movement distance.

[0033] In a preferred embodiment, the upper surface of the horizontal plate 11 is provided with limiting rods 12 at both ends. The limiting rods 12 include limiting posts disposed on the horizontal plate 11. The upper end of the limiting post is provided with a threaded section. The adjusting plate 3 has a limiting hole 31 at the corresponding position. The threaded section on the limiting post passes through the limiting hole 31 and is screwed into the nut 32.

[0034] In this embodiment, the limiting rod 12 is used to limit the maximum rising height of the first guide tube 21 and the adjusting plate 3, and to prevent the adjusting plate 3 from overshooting. It also prevents the adjusting plate 3 from rotating together with the stepper motor 52 when it rotates.

[0035] In a preferred embodiment, a first sliding plate 241 is fixed on the sealing plate 24. The first sliding plate 241 is sleeved on the outside of the second conduit 23 and is rotatably connected to the second conduit 23. The longitudinal cross-section of the first sliding plate 241 is U-shaped with the horizontal direction facing the second conduit 23. The upper horizontal plate of the first sliding plate 241 is connected to the outer wall of the second conduit 23 above the inflation hole 25. The lower horizontal plate of the first sliding plate 241 is fixedly connected to the sealing plate 24 and is also connected to the outer wall of the second conduit 23 below the inflation hole 25. The air inlet pipe 26 passes through the first sliding plate 241 and pumps high-pressure gas into the inner cavity of the first sliding plate 241.

[0036] In this embodiment, the function of the first sliding plate 241 is, on the one hand, to connect the air inlet 25 on the outer wall of the second conduit 23 through the cavity of the first sliding plate 241, so as to facilitate the air inlet tube 26 to pump gas into the second conduit 23; on the other hand, it can also connect the upper and lower parts of the second conduit 23 with the air inlet 25, increase the strength of the second conduit 23 itself, and also strengthen the tightness of the connection between the second conduit 23 and the sealing plate 24.

[0037] In a preferred embodiment, the lower end face of the second conduit 23 is higher than the lower end face of the first conduit 21, and a spiral lifting blade 27 is wound around the outer wall of the portion of the second conduit 23 located inside the first conduit 21.

[0038] In this embodiment, the main function of the spiral lifting blade 27 is to assist the upward movement of the low-density sludge mixture solution, thereby better completing the air lift reverse circulation process.

[0039] As a preferred embodiment, the upper surface of the first slide plate 241 is also provided with a plurality of vertical support legs 242. The upper end of the support leg 242 is provided with a protective sleeve 243 fixedly connected to the lower surface of the drive motor 41. The protective sleeve 243 is sleeved on the outside of the output shaft of the drive motor 41, and a clearance groove for inserting the air pipe 26 is formed between adjacent support legs 242.

[0040] In this embodiment, the support leg 242 strengthens the connection between the sealing plate 24 and the upper second support frame 4. Furthermore, during operation, the second conduit 23 is filled with high-pressure gas, while the space between the first and second conduits is filled with a counter-circulating, rising low-density liquid flow. The inner and outer sides of the first and second conduits 21 and 23 are subjected to different forces. Simultaneously, due to the relatively long length of the first and second conduits 21 and 23, they are prone to swaying during slag removal. By using the support leg 242 in conjunction with the drive motor 41 to rotate the second conduit 23, a stable rotational state is maintained during use, preventing the second conduit 23 from swaying freely inside the first conduit 21.

[0041] The terms "connection" and "fixing" appearing in the description of this invention can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this invention should be understood according to the specific circumstances.

[0042] In the description of this invention, the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., are used only to indicate the orientation or positional relationship for the convenience of describing this invention and to simplify the description, and do not indicate or imply a specific orientation that the device or element referred to must have, and therefore should not be construed as a limitation of this invention.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for cleaning sediment from embedded rock piles, characterized in that, include: The first support frame (1) is a U-shaped structure with its opening facing downwards; the horizontal plate (11) of the first support frame (1) is provided with a vertical through hole, the first guide tube (21) passes through the vertical through hole on the horizontal plate (11), the outer wall of the first guide tube (21) is provided with a threaded section (22), and the inner wall of the through hole is provided with an internal thread that matches the threaded section (22); It also includes a sealing plate (24) fixed to the upper side wall of the first conduit (21), and the sealing plate (24) is used to seal the upper opening of the first conduit (21). The top side wall of the first conduit (21) is also provided with a slurry return pipe. It also includes a second conduit (23) with its top located above the adjusting plate (3). The second conduit (23) extends vertically through the sealing plate (24) and can be rotatably extended into the first conduit (21). The top side wall of the second conduit (23) has an air inlet (25). The air inlet pipe (26) is horizontally facing the air inlet (25) and sends high-pressure gas into the second conduit (23). The lower end face of the second conduit (23) is higher than the lower end face of the first conduit (21), and a spiral lifting blade (27) is wound around the outer wall of the part of the second conduit (23) located inside the first conduit (21). It also includes a second support frame (4) fixed to the upper surface of the adjustment plate (3). The second support frame (4) is a U-shaped opening facing downwards. The top of the inner wall of the second support frame (4) is provided with a vertically downward drive motor (41). The output shaft of the drive motor (41) is fixedly connected to the second conduit (23). It also includes an adjustment assembly for rotating the first conduit (21). The adjustment assembly is disposed between the first support frame (1) and the adjustment plate (3). It includes a horizontal adjustment disc (51) fixedly sleeved on the outside of the first conduit (21). The first conduit (21) is driven to rotate by the adjustment disc (51).

2. The rock-embedded pile sediment cleaning device as described in claim 1, characterized in that, The adjustment disk (51) is a gear disk. A vertically arranged stepper motor (52) is also provided on the horizontal plate (11) next to the adjustment disk (51). An axially vertical active gear disk (53) is provided on the output shaft of the stepper motor (52). A drive ring (54) is also provided outside the stepper motor (52) and the adjustment disk (51). The inner wall of the drive ring (54) is provided with transmission teeth that mesh with the active gear disk (53) and the adjustment disk (51) respectively. A sliding support rod (55) is also provided at the lower part of the drive ring (54), so that the drive ring can be rotatably embedded in the circular rotating track on the horizontal plate (11).

3. The rock-embedded pile sediment cleaning device as described in claim 1, characterized in that, The upper surface of the horizontal plate (11) is provided with limiting rods (12) at both ends. The limiting rods (12) include limiting posts set on the horizontal plate (11). The upper end of the limiting post is provided with a threaded section. The corresponding position on the adjusting plate (3) is provided with a limiting hole (31). The threaded section on the limiting post passes through the limiting hole (31) and is screwed to the nut (32).

4. The rock-embedded pile sediment cleaning device as described in claim 1, characterized in that, The sealing plate (24) is fixed with a first sliding plate (241), which is sleeved on the outside of the second conduit (23) and rotatably connected to the second conduit (23). The longitudinal section of the first sliding plate (241) is U-shaped with the horizontal direction towards the second conduit (23). The upper horizontal plate of the first sliding plate (241) is connected to the outer wall of the second conduit (23) above the air inlet (25). The lower horizontal plate of the first sliding plate (241) is fixedly connected to the sealing plate (24) and also connected to the outer wall of the second conduit (23) below the air inlet (25). The air inlet pipe (26) passes through the first sliding plate (241) and pumps high-pressure gas into the inner cavity of the first sliding plate (241).

5. The rock-embedded pile sediment cleaning device as described in claim 4, characterized in that, The upper surface of the first slide plate (241) is also provided with several vertical support legs (242). The upper end of the support leg (242) is provided with a protective sleeve (243) fixedly connected to the lower surface of the drive motor (41). The protective sleeve (243) is sleeved on the outside of the output shaft of the drive motor (41). An avoidance groove for the insertion of the air pipe (26) is formed between adjacent support legs (242).

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