Electromechanical device for cleaning sediment at bottom of pile hole

Abstract

The utility model discloses an electromechanical device for cleaning sediments at the bottom of a pile hole. The electromechanical device solves the problem that special equipment capable of continuously and efficiently cleaning the sediments at the bottom of the pile hole is lacked in the prior art. The device comprises an impact head unit, a lifting mechanism, a high-pressure water jet unit and a slag removal extraction unit, the impact head unit is arranged in a pile hole and connected with the lifting mechanism through a steel wire rope, and a hydraulic pipe connector, an extraction pipeline and a high-pressure nozzle are arranged on the impact head unit; the slag removal extraction unit is arranged on the ground and connected with an extraction pipeline on the impact head unit through a pipeline, the extraction pipeline is provided with a slag extraction opening, the high-pressure water jet unit is arranged on the ground and connected to a hydraulic pipe connector on the impact head unit through a hydraulic pipe, and the hydraulic pipe connector is communicated with the high-pressure nozzle. According to the technology, impulse type impact is conducted on sediment at the bottom of a pile hole through the impact head unit, and rapid sediment removal at the bottom of the pile hole is achieved in cooperation with extraction of the sediment removal extraction unit.

Description

Technical Field

[0001] This utility model relates to the field of drilling and hole cleaning construction technology for bored piles. Background Technology

[0002] In cast-in-place concrete piles, the load is primarily borne by the bearing stratum at the pile tip, while the pile itself mainly serves to transfer the load from the superstructure. If there is a thick layer of sediment at the bottom of the pile hole before pouring, this sediment, which is relatively loose and has poor bearing capacity, needs to be cleaned before the cast-in-place concrete pouring of the bored pile. This process is commonly known as "slag removal." The slag removal process effectively removes sediment from the bottom of the hole and adjusts the specific gravity, consistency, and viscosity of the mud slurry, preparing the pile for the subsequent concrete pouring.

[0003] For example, CN102425389A discloses a method for cleaning the bottom of cast-in-place pile holes in underground rivers. First, slurry is prepared at the bottom of the hole, and then a slag-removing bucket is used to remove the slag. If the slag thickness exceeds the standard, the slurry preparation and slag removal steps are repeated until cleaning is complete. The slag-removing bucket of this invention includes a bottom, a body, and a handle. The bottom is equipped with a double-plate, unidirectional flip-up design that can be rotated back and forth from a horizontal position. While the slag-removing bucket has a simple structure, its cleaning efficiency is relatively low during implementation and cannot meet the actual needs of engineering cleaning. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electromechanical device for cleaning sediment at the bottom of pile holes, thus solving the problem of the lack of a dedicated device for continuous and efficient cleaning of sediment at the bottom of pile holes in the existing technology.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] An electromechanical device for cleaning sediment at the bottom of pile holes is characterized by comprising an impact head unit, a lifting mechanism, a high-pressure water jet unit, and a sediment extraction unit. The impact head unit is generally cylindrical with a tapered portion at the lower end. The impact head unit is disposed inside the pile hole and connected to the lifting mechanism via a steel wire rope. The impact head unit is equipped with a hydraulic pipe interface, an extraction pipeline, and a high-pressure nozzle. The sediment extraction unit is disposed on the ground and connected to the extraction pipeline on the impact head unit via a pipe. The extraction pipeline has a sediment extraction port. The high-pressure water jet unit is disposed on the ground and connected to the hydraulic pipe interface on the impact head unit via a hydraulic pipe. The hydraulic pipe interface is connected to the high-pressure nozzle.

[0007] The high-pressure nozzle includes a first high-pressure nozzle and a second high-pressure nozzle disposed on the impact head unit. The first high-pressure nozzle is installed in a first mounting hole, which is arranged along the tangent direction of the cylindrical outer shell. The second high-pressure nozzle is installed in a second mounting hole, which is arranged along the direction of the tapered portion towards the tangent and inclined downward. The spray direction of the second high-pressure nozzle is opposite to that of the first high-pressure nozzle.

[0008] Furthermore, the number of the first high-pressure nozzles is three, and they are evenly distributed along the circumference.

[0009] Furthermore, the number of the second high-pressure nozzles is three, and they are evenly distributed along the circumference.

[0010] Furthermore, the impact head unit includes a cast iron outer shell and tin or lead inside an internal cavity.

[0011] Furthermore, the high-pressure water jet unit is an ultra-high pressure cleaner, which provides a minimum of 100 MPa / bar and a maximum of 1000 MPa / bar high-pressure water jet.

[0012] Furthermore, the extraction pipeline is installed vertically through the impact head unit, with its lower end being a sludge extraction port and its upper end being a flange port, which is connected to the mud pipe of the sludge extraction unit via a flange connection.

[0013] Furthermore, the slag extraction unit is a mud pump.

[0014] Furthermore, the impact head unit is equipped with a lifting ring for fixing the steel wire rope.

[0015] The beneficial effects of this utility model are:

[0016] This technology uses an impact head unit to pulse-impact the sediment at the bottom of the pile hole, effectively disturbing and agitating the sediment. It also uses a high-pressure water jet to spray the sediment laterally, especially the sediment and silt around the reinforcing cage, to prevent the sediment from settling again. Combined with the slag extraction unit, it achieves rapid slag removal from the bottom of the pile hole. Moreover, the slag removal process is automatic, making it an automated device that can achieve efficient slag removal. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the impact head unit.

[0018] Figure 2 for Figure 1 A bottom view.

[0019] Figure 3 for Figure 1 Side view.

[0020] Figure 4 for Figure 1 A sectional view.

[0021] Figure 5 This is the composition principle of this utility model.

[0022] In the picture:

[0023] 00 Pile Hole, 01 Sediment,

[0024] 100 Impact head unit, 110 Housing, 111 Annular wall, 112 Bottom shell, 113 First mounting hole, 114 First high-pressure nozzle, 115 Second mounting hole, 116 Second high-pressure nozzle, 120 End cap, 121 Lifting ring, 130 Metal pipe, 131 Hydraulic pipe interface, 140 Extraction pipeline, 141 Sludge extraction port, 142 Flange, 150 Filler body.

[0025] 200 upgrading agencies,

[0026] 300 high-pressure water jet unit,

[0027] 400 slag removal and extraction unit. Detailed Implementation

[0028] An electromechanical device for cleaning sediment at the bottom of pile holes includes an impact head unit 100, a lifting mechanism 200, a high-pressure water jet unit 300, and a sediment extraction unit 400. The impact head unit 100 is hoisted to the bottom of the pile hole 00 and connected to the lifting mechanism via a wire rope. The lifting mechanism raises the impact head unit vertically and releases it to a certain height, impacting the sediment 01 at the bottom of the hole. This impact causes the sediment to float, and the sediment extraction unit then extracts and discharges the mud mixture containing the sediment from the bottom of the hole. The process also includes a high-pressure water jet impact step. Specifically, during the pulse impact of the sediment at the bottom of the hole, the high-pressure water jet generated by the high-pressure water jet unit impacts the bottom and walls of the hole. This operation serves two purposes: firstly, to assist in cleaning the blind spots of the impact (such as the location of the reinforcing cage), and secondly, to replenish water in the pile hole (to compensate for the turbid water extracted by the cleaning and extraction unit).

[0029] The following section provides a detailed explanation of the composition, structure, and principle of this device, taking into account the specific construction process.

[0030] refer to Figures 1 to 4These four figures illustrate in detail the internal and external structure of the impact head unit 100, which is the core component. Specifically, the impact head unit 100 is cylindrical in shape and has a slightly bulging conical part at the lower end. This conical part has a self-centering function during the pulse impact process, ensuring that the impact head unit is basically aligned with the axis of the pile hole.

[0031] The impact head unit consists of a shell-shaped main structure and high-pressure nozzles, metal pipes, and extraction pipes mounted on the main structure. The main structure includes an outer shell 110 and an end cap 120. The outer shell is made of cast iron and has an annular wall 111 and a bottom shell 112, which are integrally cast. The bottom shell has a downwardly bulging conical portion. A first mounting hole 113 is provided on the annular wall along the tangential direction. This first mounting hole is formed into a mounting surface through secondary machining and a first high-pressure nozzle 114 is installed thereon. There are three first high-pressure nozzles, and correspondingly, three first mounting holes, which are evenly arranged within the circumferential space of the annular wall. Furthermore, three second mounting holes 115 are also provided on the bottom shell 112, each housing a second high-pressure nozzle 116. These second high-pressure nozzles are also arranged tangentially and downwards, with their spray direction substantially opposite to that of the first high-pressure nozzle. For example, if the first high-pressure nozzle is directed clockwise towards the main structure, the second high-pressure nozzle is directed counterclockwise towards the main structure. This arrangement allows the first and second high-pressure nozzles to simultaneously spray high-pressure water jets, generating opposing water flows that cancel each other out, thus maintaining the impact head unit in a relatively non-rotating state.

[0032] The first and second high-pressure nozzles described above have the same structure and principle. The difference lies in their installation positions and the direction of nozzle spray after installation.

[0033] The first high-pressure nozzle and the second high-pressure nozzle mentioned above are respectively connected to the metal pipe 130 inside the main structure, and after merging through the metal pipe, they are led out through the hydraulic pipe interface 131 on the main structure. The hydraulic pipe interface is connected to the high-pressure water jet unit 300 through the hydraulic pipe. The high-pressure water jet unit 300 is preferably an ultra-high pressure cleaner. The ultra-high pressure cleaner provides a high-pressure water jet with a minimum of 100 MPa / bar and a maximum of 1000 MPa / bar for efficient disturbance of sediment at the bottom of the pile hole.

[0034] The extraction pipeline 140 is installed vertically within the impact head unit. Its lower end is a sediment extraction port 141 for extracting sediment from the pile hole, and its upper end is a flange port 142, which connects to the mud pipe of the sediment extraction unit 400. The sediment extraction unit 400 provides power for the extraction. For example, a mining 250 mud pump from Shandong Energy Group, model BW160 / 10, can be used for efficient extraction of rising sediment from inside the pile hole.

[0035] The end cap 120 is installed on the top of the outer shell and forms an effective encapsulation. In the encapsulated inner cavity, the cavity is filled by injecting high-density molten tin or molten lead to form a high-density filler 150, which forms a near-solid structure. This structure has a greater self-weight and can produce a better sludge uplift effect during the impact pile hole bottom process, further improving the sludge removal efficiency.

[0036] Furthermore, three lifting rings 121 are welded and fixed on the end cap for binding the wire rope, i.e., the lower end fixing point of the wire rope in the lifting mechanism.

[0037] The lifting mechanism 200 is installed on the ground at the top of the pile hole. It uses a steel wire rope to lift and quickly lower the impact head unit within a certain height range, for example, each impact stroke is set to 1 meter. The impact head unit impacts the pile by slowly lifting and quickly releasing. For example, refer to... Figure 5 The lifting mechanism can be a winch, that is, the winch drives the impact head unit to lift and quickly lower it via a wire rope.

[0038] As can be seen in this embodiment, the sediment at the bottom of the pile hole is stirred up by a combination of impact and high-pressure water jet, and the turbid water containing mud and debris is extracted by the extraction pipeline. The whole process is carried out automatically, which effectively improves the efficiency and effect of hole cleaning.

[0039] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An electromechanical device for cleaning sediment from the bottom of pile holes, characterized in that, The system includes an impact head unit, a lifting mechanism, a high-pressure water jet unit, and a slag removal and extraction unit. The impact head unit is cylindrical with a tapered section at the lower end and is positioned inside the pile hole, connected to the lifting mechanism via a wire rope. The impact head unit is equipped with a hydraulic pipe interface, an extraction pipeline, and a high-pressure nozzle. The slag removal and extraction unit is positioned on the ground and connected to the extraction pipeline on the impact head unit via a pipe. This extraction pipeline has a slag extraction port. The high-pressure water jet unit is positioned on the ground and connected to the hydraulic pipe interface on the impact head unit via a hydraulic pipe, which communicates with the high-pressure nozzle.

2. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 1, characterized in that, The high-pressure nozzle includes a first high-pressure nozzle and a second high-pressure nozzle disposed on the impact head unit. The first high-pressure nozzle is installed in a first mounting hole, which is arranged along the tangent direction of the cylindrical outer shell. The second high-pressure nozzle is installed in a second mounting hole, which is arranged along the direction of the tapered portion towards the tangent and inclined downward. The spray direction of the second high-pressure nozzle is opposite to that of the first high-pressure nozzle.

3. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 2, characterized in that, The number of the first high-pressure nozzles is three, and they are evenly distributed along the circumference.

4. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 2, characterized in that, The second high-pressure nozzle consists of three nozzles, which are evenly distributed circumferentially.

5. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 2, characterized in that, The impact head unit includes a cast iron outer shell and tin or lead inside an internal cavity.

6. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 1, characterized in that, The high-pressure water jet unit is an ultra-high pressure cleaner, which provides a minimum of 100 MPa / bar and a maximum of 1000 MPa / bar high-pressure water jet.

7. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 1, characterized in that, The extraction pipeline is installed vertically within the impact head unit, with its lower end being a sludge extraction port and its upper end being a flange port. This flange port is connected to the mud pipe of the sludge extraction unit via a flange connection.

8. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 1, characterized in that, The slag removal unit is a mud pump.

9. The electromechanical device for cleaning sediment at the bottom of pile holes according to claim 1, characterized in that, The impact head unit is equipped with a lifting ring for fixing the steel wire rope.

Images