Dredging device for cast-in-situ bored pile

Abstract

The utility model relates to the technical field of cast-in-situ bored pile construction, and particularly discloses a cast-in-situ bored pile desilting device which comprises a collecting barrel, a desilting device and a desilting device. A lower drum; a bottom desilting mechanism; a collecting mechanism; and a top dredging mechanism. The lower rotary drum is located at the bottom of a pile hole through extension of the telescopic arm, then a dredging pump outside the pile hole is started, water is injected into the lower rotary drum through a connecting pipe and a guide pipe, and the water enters the bottom of the pile hole from a discharging hole, so that sludge or sediment originally located at the bottom of the pile hole upflows upwards; sludge or sediment is guided into the collecting cylinder through the collecting mechanism, in this way, most of the sludge or sediment at the bottom of the pile hole can be cleaned away, then the telescopic arm is matched to enable the top dredging mechanism to move upwards and conduct dredging on the inner wall of the pile hole at the same time, and therefore dredging on the bottom and the inner wall of the pile hole can be achieved at the same time, and then the dredging efficiency is improved; and the construction progress is accelerated.

Description

Technical Field

[0001] This utility model belongs to the field of bored pile construction technology, and in particular relates to a dredging device for bored piles. Background Technology

[0002] Cast-in-place piles are piles made by forming pile holes in the foundation soil through mechanical drilling, steel pipe extrusion, or manual excavation on the engineering site, placing a steel cage inside, and pouring concrete. Depending on the hole-forming method, cast-in-place piles can be divided into several categories such as driven cast-in-place piles, drilled cast-in-place piles, and excavated cast-in-place piles.

[0003] Before pouring concrete into the pile hole, the inside of the pile hole needs to be cleaned. Currently, the cleaning mainly involves cleaning the inner wall of the pile hole. However, the silt removed during the cleaning process falls to the bottom of the pile hole, which is not convenient for later cleaning. To address the aforementioned technical problems, the applicant has retrieved some existing technologies for collecting the cleaned silt. For example, patent publication number CN220013674U describes a silt removal device for bridge bored piles. Its main technical means involves setting up a first linear telescopic component, a connecting component, an mounting ring, a silt scraping component, a second linear telescopic component, and a storage tank. The first linear telescopic component lowers the connecting component, mounting ring, silt scraping component, second linear telescopic component, and storage tank into the pile hole. Multiple second linear telescopic components are activated, pushing the free end of the silt scraping component beyond the projection of the mounting ring and into contact with the silt in the pile hole. Finally, the first linear telescopic component is activated to retract, causing the silt scraping component to move upwards and scrape away the silt in the pile hole. The silt passes sequentially through the silt scraping component and mounting ring into the storage tank, completing the collection. The second linear telescopic component ensures that the silt scraping component enters the bottom of the pile hole before unfolding, preventing it from scraping silt towards the bottom of the pile hole during descent, thus avoiding the problem of scraping silt from the hole wall to the bottom during lowering. According to the applicant's analysis, the drawback of this technical solution is that there is already silt at the bottom of the pile hole. If the silt is removed by the above solution, the storage tank will block the bottom of the pile hole, making it impossible to remove the silt. Instead, the silt at the bottom of the pile hole needs to be removed separately, which reduces the dredging efficiency and delays the construction progress. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a dredging device for bored piles, thereby solving the technical problem that it is currently impossible to simultaneously dredge the bottom and inner wall of the pile hole when dredging the inside of the pile hole.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A dredging device for bored piles includes a telescopic arm, a guide pipe, and a connecting pipe. The device further includes:

[0007] A collection cylinder is fixed around the outer periphery of the conduit, and a filter cylinder is provided at the bottom of the collection cylinder;

[0008] The lower rotating cylinder is rotatably mounted at the bottom of the conduit. Several discharge holes are opened around the lower rotating cylinder, and a spiral plate is installed inside the lower rotating cylinder.

[0009] Bottom sludge removal mechanism: Several sets of bottom sludge removal mechanisms are installed around the lower rotating drum;

[0010] A collection mechanism is installed around the collection cylinder;

[0011] The top sludge removal mechanism has a middle section of the guide tube that is disconnected and equipped with an upper rotating cylinder. The upper rotating cylinder is located above the collection mechanism, and the top sludge removal mechanism is installed around the upper rotating cylinder.

[0012] As a preferred embodiment of the above technical solution, the bottom dredging mechanism includes:

[0013] Fixed plates are provided around the lower rotating cylinder;

[0014] A sludge removal plate, wherein the other end of the fixed plate is hinged to a sludge removal plate, and the sludge removal plate is L-shaped;

[0015] An elastic element is provided between the side of the dredging plate and the same side of the fixing plate.

[0016] As a preferred embodiment of the above technical solution, the inner side of the dredging plate is provided with several guide plates longitudinally.

[0017] As a preferred embodiment of the above technical solution, the collection mechanism includes:

[0018] Rotating rods: Several rotating rods are rotatably mounted around the periphery of the collecting cylinder;

[0019] An elastic cloth is provided between two adjacent rotating rods;

[0020] A movable ring is movably installed around the periphery of the collecting cylinder, and a movable rod is movably connected between the movable ring and the rotating rod;

[0021] A guide seat is fixed around the periphery of the collecting cylinder, and several telescopic components are installed inside the guide seat. The output end of the telescopic components is connected to the bottom of the movable ring.

[0022] As a preferred embodiment of the above technical solution, the outer periphery of the guide seat is inclined and tilted downwards, that is, the diameter of the bottom surface of the guide seat is smaller than the diameter of its top surface.

[0023] As a preferred embodiment of the above technical solution, the two ends of the upper rotating cylinder are rotatably connected to the ends of the two sections of the conduit, a spiral plate is provided inside the upper rotating cylinder, and a valve is installed inside the conduit, with the valve located below the upper rotating cylinder.

[0024] As a preferred embodiment of the above technical solution, the top dredging mechanism includes:

[0025] A fixing ring is fixed around the outer periphery of the upper rotating cylinder;

[0026] A rotating sludge removal head is provided, wherein a plurality of rotating sludge removal heads are installed around the fixed ring, the rotating sludge removal heads are connected to the fixed ring, and the fixed ring is connected to the upper rotating cylinder;

[0027] The sludge-removing brush has several telescopic rods installed around the fixed ring, and the sludge-removing brush is installed at the other end of each telescopic rod.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. In this utility model, the lower rotating cylinder is positioned at the bottom of the pile hole by extending the telescopic arm. Then, the dredging pump outside the pile hole is started, and water is injected into the lower rotating cylinder through the connecting pipe and the guide pipe. The water enters the bottom of the pile hole from the discharge hole, causing the silt or sediment originally located at the bottom of the pile hole to surge upward. When the silt or sediment moves above the collection mechanism, the collection mechanism guides the silt or sediment into the collection cylinder. The silt or sediment enters the filter cylinder, and the water in the silt or sediment is filtered out and returns to the bottom of the pile hole. In this way, most of the silt or sediment at the bottom of the pile hole can be cleaned. In addition, the telescopic arm moves the top dredging mechanism upward to clean the inner wall of the pile hole at the same time, so as to achieve simultaneous cleaning of the bottom and inner wall of the pile hole, thereby improving the dredging efficiency and speeding up the construction progress.

[0030] 2. In this utility model, after water enters the lower rotating cylinder, it is guided by the spiral plate to form a spiral shape. Thus, the lower rotating cylinder rotates under the power of the water. The rotation of the lower rotating cylinder will drive several sets of bottom cleaning mechanisms to clean the inner wall of the bottom area of ​​the pile hole, remove the silt or sediment on the inner wall, avoid cleaning dead corners, and thus improve the cleaning effect of the bottom of the pile hole.

[0031] 3. In this utility model, after several rotating rods drive several elastic cloths to unfold outward and block the bottom of the pile hole, the valve is closed by the external control system. Then, the dredging pump outside the pile hole is started, and water is injected into the guide pipe through the connecting pipe. Since the valve is closed, the water in the guide pipe will enter the rotating dredging head from the fixed ring and spray out from the rotating dredging head, thereby cleaning the silt or sediment on the inner wall of the pile hole. Since the upper rotating cylinder is equipped with a spiral plate II, after the water enters the upper rotating cylinder, the water is guided by the spiral plate II to form a spiral shape. Thus, the upper rotating cylinder rotates under the power of the water, which drives the towing rod to rotate the dredging head, thereby improving the dredging effect of the rotating dredging head and thus improving the dredging efficiency. At the same time, the upper rotating cylinder drives several dredging brushes to rotate. Since the dredging brushes are connected to the telescopic rod, the telescopic rod can be adjusted to adapt to pile holes of different diameters. The rotation of the dredging brushes will clean the silt and sediment on the inner wall of the pile hole, thereby further improving the dredging effect and efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 To collect schematic diagrams of the mechanism structure;

[0034] Figure 3 This is a schematic diagram of the bottom dredging mechanism.

[0035] Figure 4 This is a schematic diagram of the top dredging mechanism.

[0036] In the picture:

[0037] 1. Telescopic arm; 2. Conduit; 21. Connecting pipe; 22. Valve; 3. Collection cylinder; 31. Filter cylinder; 4. Lower rotating cylinder; 41. Discharge hole; 42. Spiral plate one; 5. Bottom sludge removal mechanism; 51. Fixing plate; 52. Sludge removal plate; 53. Elastic component; 54. Guide plate; 6. Collection mechanism; 61. Rotating rod; 62. Elastic cloth; 63. Movable ring; 64. Movable rod; 65. Guide seat; 66. Telescopic component; 7. Upper rotating cylinder; 71. Spiral plate two; 8. Top sludge removal mechanism; 81. Fixing ring; 82. Rotating sludge removal head; 83. Telescopic rod; 84. Sludge removal brush. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0039] like Figures 1-3 As shown, a dredging device for bored piles includes a telescopic arm 1, a guide pipe 2, and a connecting pipe 21. The device also includes:

[0040] The collection cylinder 3 is fixed around the outer periphery of the conduit 2, and the bottom of the collection cylinder 3 is provided with a filter cylinder 31;

[0041] The lower rotating cylinder 4 is rotatably installed at the bottom of the guide tube 2. Several discharge holes 41 are opened around the lower rotating cylinder 4, and a spiral plate 42 is installed inside the lower rotating cylinder 4.

[0042] Bottom dredging mechanism 5; Several sets of bottom dredging mechanisms 5 are installed around the lower rotating drum 4.

[0043] Collection mechanism 6 is installed around the collection cylinder 3;

[0044] The top sludge removal mechanism 8 has a middle section of the guide tube 2 that is disconnected and an upper rotating cylinder 7 is installed. The upper rotating cylinder 7 is located above the collection mechanism 6, and the top sludge removal mechanism 8 is installed around the upper rotating cylinder 7.

[0045] In one embodiment, the conduit 2 is connected to the connecting pipe 21, and the connecting pipe 21 is connected to the dredging pump outside the pile hole.

[0046] In practical application, the telescopic arm 1 extends the guide pipe 2, connecting pipe 21, and collection cylinder 3 into the pile hole, positioning the lower rotating cylinder 4 at the bottom of the pile hole. Then, the dredging pump outside the pile hole is activated, injecting water into the lower rotating cylinder 4 through the connecting pipe 21 and guide pipe 2. The water enters the bottom of the pile hole through the discharge hole 41, causing the silt or sediment originally at the bottom of the pile hole to rise. When the silt or sediment moves above the collection mechanism 6, the collection mechanism 6 guides the silt or sediment into the collection cylinder 3, where it enters the filter cylinder 31. The water in the silt or sediment is filtered out and returns to the bottom of the pile hole. This process removes most of the silt or sediment from the bottom of the pile hole. Simultaneously, the telescopic arm 1 moves the top dredging mechanism 8 upwards to dredge the inner wall of the pile hole, achieving simultaneous dredging of the bottom and inner wall of the pile hole, thus improving dredging efficiency and accelerating construction progress. After dredging is completed, the dredging pump can pump out the excess water from the pile hole.

[0047] After water enters the lower rotating drum 4, it is guided by the spiral plate 42, causing the water to spiral. Thus, the lower rotating drum 4 rotates under the power of the water. The rotation of the lower rotating drum 4 will drive several sets of bottom cleaning mechanisms 5 to clean the inner wall of the bottom area of ​​the pile hole, removing the silt or sediment on the inner wall, avoiding cleaning dead corners, and thus improving the cleaning effect of the bottom of the pile hole.

[0048] Furthermore, the bottom dredging mechanism 5 includes:

[0049] Fixed plate 51, several fixed plates 51 are provided around the lower rotating cylinder 4;

[0050] The other end of the fixing plate 51 is hinged to the dredging plate 52, which is L-shaped.

[0051] Elastic element 53 is connected between the side of the dredging plate 52 and the same side of the fixing plate 51.

[0052] Several guide plates 54 are longitudinally arranged on the inner side of the dredging plate 52.

[0053] In one embodiment, the elastic element 53 may be a tension spring or other components capable of elastic extension and retraction.

[0054] In practical application, after the lower rotating drum 4 rotates, the fixed plate 51 drives the sludge removal plate 52 to rotate. Under the action of centrifugal force, the sludge removal plate 52 slowly rotates and adheres to the inner wall, thereby cleaning the sludge or sediment on the inner wall and entering the collection drum 3 with the upward-moving sludge or sediment. This avoids the presence of cleaning dead corners at the bottom of the pile hole, thereby further improving the sludge removal efficiency and effect.

[0055] The cleaned-up sludge and sediment move upward under the guidance of the guide plate 54, so that the sludge and sediment can move upward quickly and enter the collection cylinder 3 quickly, thereby further improving efficiency.

[0056] By rotating the dredging plate 52 and cooperating with the elastic element 53, the dredging plate 52 can adapt to pile holes of different diameters, thereby improving the adaptability of the device.

[0057] Furthermore, the collection agency 6 includes:

[0058] Rotating rod 61: Several rotating rods 61 are rotatably installed around the periphery of the collecting cylinder 3;

[0059] Elastic cloth 62 is provided between two adjacent rotating rods 61;

[0060] A movable ring 63 is movably installed around the collection cylinder 3, and a movable rod 64 is movably connected between the movable ring 63 and the rotating rod 61.

[0061] Guide seat 65, the outer periphery of the collecting cylinder 3 is fixed with guide seat 65, and several telescopic parts 66 are installed inside guide seat 65. The output end of telescopic part 66 is connected to the bottom of movable ring 63.

[0062] The outer periphery of the guide seat 65 is inclined and tilts downwards, meaning that the diameter of the bottom surface of the guide seat 65 is smaller than the diameter of its top surface.

[0063] In one embodiment, the telescopic component 66 can be a cylinder or other component capable of driving the movable ring 63 to move up and down; the telescopic component 66 is connected to an external control system, and an online turbidity detector is installed outside the lower rotating cylinder 4. The online turbidity detector is connected to the external control system and detects the turbidity of the water at the bottom of the pile hole.

[0064] In practical application, when the turbidity of the water at the bottom of the pile hole drops to a certain range (this range ensures that there is as little silt or sediment as possible in the water), most of the silt or sediment moves upward to the top of the collection mechanism 6. Then, through the external control system, several telescopic components 66 are contracted, causing the movable ring 63 to drive several movable rods 64 to cause several rotating rods 61 to unfold outward, thereby unfolding the elastic cloth 62. This allows the elastic cloth 62 to block the bottom of the pile hole, preventing the silt or sediment from returning to the bottom of the pile hole. At the same time, the silt or sediment above is guided into the collection cylinder 3. Finally, the telescopic arm 1 moves the top sludge removal mechanism 8 upward to sludge the inner wall of the pile hole. The silt or sediment removed is guided into the collection cylinder 3 by the collection mechanism 6, thus achieving simultaneous sludge removal of the bottom and inner wall of the pile hole, thereby improving sludge removal efficiency and accelerating the construction progress.

[0065] The guide seat 65 is inclined around its periphery, which can guide the upward-moving silt or sediment, allowing the silt or sediment to move smoothly upward and enter the collection cylinder 3.

[0066] like Figure 1 and Figure 4 As shown, the two ends of the upper rotating cylinder 7 are rotatably connected to the ends of the two sections of the guide tube 2, respectively. A spiral plate 71 is provided inside the upper rotating cylinder 7, and a valve 22 is installed inside the guide tube 2. The valve 22 is located below the upper rotating cylinder 7.

[0067] Top dredging mechanism 8 includes:

[0068] A fixing ring 81 is fixed around the outer periphery of the upper rotating cylinder 7;

[0069] A rotating sludge removal head 82 is installed around a fixed ring 81. The rotating sludge removal head 82 is connected to the fixed ring 81, and the fixed ring 81 is connected to the upper rotating cylinder 7.

[0070] The dredging brush 84 has several telescopic rods 83 installed around the fixing ring 81, and the dredging brush 84 is installed at the other end of the telescopic rods 83.

[0071] In one embodiment, valve 22 may be an electrically controlled valve and connected to an external control system.

[0072] In practical application, when several rotating rods 61 drive several elastic cloths 62 to expand outward and block the bottom of the pile hole, the valve 22 is closed by the external control system. Then, the sludge pump outside the pile hole is started, and water is injected into the guide pipe 2 through the connecting pipe 21. Since the valve 22 is closed, the water in the guide pipe 2 will enter the rotating sludge head 82 from the fixed ring 81 and spray out from the rotating sludge head 82, thereby cleaning the silt or sediment on the inner wall of the pile hole. Since the upper rotating cylinder 7 is equipped with a spiral plate 71, after the water enters the upper rotating cylinder 7, the spiral plate 71 will cause the water to be drawn out by the spiral plate 71. The guide plate 71 causes the water to flow in a spiral shape, which in turn causes the upper rotating cylinder 7 to rotate under the power of the water. The upper rotating cylinder 7 then drives the rotating sludge removal head 82 to rotate, thereby improving the sludge removal effect of the rotating sludge removal head 82 and thus improving the sludge removal efficiency. At the same time, the upper rotating cylinder 7 drives several sludge removal brushes 84 to rotate. Since the sludge removal brushes 84 are connected to the telescopic rod 83, the telescopic rod 83 can be adjusted to accommodate pile holes of different diameters. The rotation of the sludge removal brushes 84 cleans the silt and sediment on the inner wall of the pile hole, thereby further improving the sludge removal effect and efficiency.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A bored pile dredging device comprising a telescopic arm (1), a guide tube (2) and a connecting pipe (21), characterized in that, The device further includes: A collection cylinder (3) is fixed around the conduit (2), and a filter cylinder (31) is provided at the bottom of the collection cylinder (3). The lower rotating cylinder (4) is rotatably installed at the bottom of the guide tube (2). Several discharge holes (41) are opened around the lower rotating cylinder (4). A spiral plate (42) is provided inside the lower rotating cylinder (4). Bottom dredging mechanism (5), several sets of bottom dredging mechanisms (5) are installed around the lower rotating cylinder (4); Collection mechanism (6), the collection cylinder (3) is equipped with a collection mechanism (6) on its periphery; The top sludge removal mechanism (8) is provided with a top rotating cylinder (7) installed in the middle section of the conduit (2). The top rotating cylinder (7) is located above the collection mechanism (6), and the top sludge removal mechanism (8) is installed around the top rotating cylinder (7).

2. A bored pile dredging device according to claim 1, characterized in that, The bottom dredging mechanism (5) includes: Fixing plate (51), a number of fixing plates (51) are provided around the lower rotating cylinder (4); The other end of the fixing plate (51) is hinged to the sludge removal plate (52), and the sludge removal plate (52) is L-shaped; An elastic element (53) is connected between the side of the dredging plate (52) and the same side of the fixing plate (51).

3. A bored pile dredging device according to claim 2, characterized in that Several guide plates (54) are longitudinally arranged on the inner side of the dredging plate (52).

4. The dredging device for bored piles according to claim 1, characterized in that, The collection mechanism (6) includes: Rotating rod (61): Several rotating rods (61) are rotatably installed around the periphery of the collecting cylinder (3). Elastic cloth (62) is provided between two adjacent rotating rods (61); Movable ring (63), a movable ring (63) is movably installed around the collection cylinder (3), and a movable rod (64) is movably connected between the movable ring (63) and the rotating rod (61). Guide seat (65), the outer periphery of the collecting cylinder (3) is fixed with guide seat (65), and a number of telescopic parts (66) are installed inside the guide seat (65). The output end of the telescopic part (66) is connected to the bottom of the movable ring (63).

5. A bored pile dredging device according to claim 4, characterized in that The guide seat (65) is inclined around its periphery and tilts downwards, meaning that the bottom diameter of the guide seat (65) is smaller than its top diameter.

6. The bored pile dredging apparatus according to claim 1, characterized in that, The two ends of the upper rotating cylinder (7) are rotatably connected to the ends of the two sections of the conduit (2). The upper rotating cylinder (7) is provided with a spiral plate (71), and the conduit (2) is equipped with a valve (22). The valve (22) is located below the upper rotating cylinder (7).

7. A bored pile dredging device according to claim 6, characterized in that The top dredging mechanism (8) includes: A fixing ring (81) is fixed around the upper rotating cylinder (7); A rotating sludge removal head (82) is provided. Several rotating sludge removal heads (82) are installed around the fixed ring (81). The rotating sludge removal head (82) is connected to the fixed ring (81). The fixed ring (81) is connected to the upper rotating cylinder (7). The dredging brush (84) has several telescopic rods (83) installed around the fixed ring (81), and the dredging brush (84) is installed at the other end of the telescopic rods (83).

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