A casing bite pile inner wall cleaning device, method and rotary drilling drill

Abstract

The invention discloses a casing bite pile inner wall cleaning device, method and rotary drilling drill, which solves the problem that the casing wall is difficult to clean in the prior art, and has the beneficial effect of conveniently cleaning the soil attached to the pipe wall after the casing is holed, and avoiding the formation of pile foundation defects after concrete pouring. The scheme is as follows: a casing bite pile inner wall cleaning device, comprising a rotary drilling bit arranged on the rotary drilling drill and a fixed sleeve which can be detachably arranged on the circumferential direction of the rotary drilling bit, the fixed sleeve is provided with a cleaning component for cleaning the inner wall of the casing bite pile, the fixed sleeve and the rotary drilling bit are both provided with openings in the circumferential direction, and a water pipe can be rotary drill bit to allow water to enter the rotary drilling bit and spray to the inner wall of the casing bite pile through the opening of the fixed sleeve.

Description

Technical Field

[0001] The invention relates to the field of civil construction, and in particular to a device and method for cleaning the inner wall of a casing bite pile and a rotary drilling drill. Background Art

[0002] Casing interlocking piles refer to reinforced concrete "pile walls" formed by interlocking adjacent piles with casing as a wall protection method, and the shear force can be transmitted between the piles. Compared with the method of ordinary cast-in-place piles plus rotary jet piles, this method has strong shear resistance and good water-stopping effect for the maintenance structure; compared with traditional ground-connected walls, casing interlocking piles have high construction flexibility and save steel bars at a low cost.

[0003] The drilling of casing interlocking piles adopts the method of casing follow-up, grab bucket or rotary drilling rig to take soil. In the process of taking soil, due to the gap between the grab bucket and the casing, the sticky soil is easy to adhere to the casing wall and is difficult to remove. The casing is to be reused many times. When the casing containing soil is reused for the second time, a mud layer is formed during the concrete pouring process, which affects the quality of the pile. In severe cases, it causes the loss of soil in the mud layer during the excavation of the foundation pit, forming a leakage channel. In order to solve this problem, the existing technology mainly uses high-pressure water to clean the steel casing after the steel casing is pulled out. The cleaning speed is slow and the cleaning effect is poor.

[0004] Therefore, it is necessary to conduct new research and design on a casing bite pile inner wall cleaning device. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a device for cleaning the inner wall of a casing bite pile, which is convenient for cleaning the soil attached to the pipe wall after the casing is bored, thereby avoiding pile foundation defects after concrete pouring.

[0006] A specific scheme of a casing bite pile inner wall cleaning device is as follows:

[0007] A casing bite pile inner wall cleaning device comprises a rotary drilling bit arranged on a rotary drilling machine and a fixed sleeve which can be detachably arranged in the circumferential direction of the rotary drilling bit, the fixed sleeve is provided with a cleaning component for cleaning the casing bite pile inner wall, the fixed sleeve and the rotary drilling bit are both provided with openings in the circumferential direction, a water pipe can be rotated inside the rotary drilling bit to allow water to enter the rotary drilling bit and be sprayed toward the casing bite pile inner wall through the openings of the fixed sleeve.

[0008] The above-mentioned cleaning device, through the setting of the opening, can spray water to the inside of the casing bite pile, and then clean the dirt inside the pile through the cleaning component. The cleaning effect is good, and can effectively reduce the pile quality defects caused by mud in the steel sleeve of the casing bite pile, and avoid engineering problems such as foundation pit leakage caused by pile quality defects.

[0009] Furthermore, in order to facilitate the removal of mud and dirt, the cleaning component is a plurality of flexible steel wires, which are arranged on the surface of the fixed sleeve, and the opening is set higher than the cleaning component, so that high-pressure water first infiltrates the mud and dirt from above through the opening, and then as the rotary drill is rotated out, the cleaning component quickly and effectively processes the wet mud and dirt.

[0010] Furthermore, a partition is arranged inside the rotary drilling drill bit to divide the rotary drilling drill bit into two layers, an upper layer and an lower layer, so that the rotary drilling drill bit is divided into a first chamber and a second chamber.

[0011] Furthermore, the cleaning component is arranged at the lower half of the fixed sleeve, and the upper half of the fixed sleeve is provided with a protrusion, which can play the role of breaking mud blocks. The protrusion is an annular protrusion or a single protrusion. The protrusion is provided with multiple layers, and the adjacent two layers are arranged at a set distance. The opening of the fixed sleeve is provided between the two adjacent layers of protrusions, which facilitates the fixed sleeve to enter the casing bite pile.

[0012] Furthermore, the rotary drill bit is provided with an axle wheel hole, and a bearing is provided in the axle wheel hole. The water pipe can enter the rotary drill bit through the axle wheel hole. The rotary drill bit rotates, but the water pipe does not rotate. The axle wheel hole is provided in the first chamber, so that water flows into the first chamber and then sprays out through the opening.

[0013] Furthermore, the fixing sleeve has a convex portion, and the rotary drilling drill has a slot that cooperates with the convex portion. The slot can be blocked by a blocking member such as a bolt. When dirt needs to be cleaned, the convex portion of the fixing sleeve cooperates with the slot to achieve connection between the fixing sleeve and the rotary drilling drill.

[0014] Alternatively, the fixing sleeve is a long strip structure that can be bent into a ring shape. Buckles are provided at both ends of the long strip structure, and the fixing sleeve is arranged around the rotary drill bit through the buckles. In this way, the fixing sleeve does not need to be fixedly connected to the rotary drill, but only needs to be covered on the rotary drill bit.

[0015] Furthermore, the plurality of flexible steel wires are evenly arranged in an annular direction on the surface of the fixing sleeve, and the flexible steel wires are arranged obliquely downward.

[0016] The present invention also provides a rotary drilling drill, which includes a rotary drilling drill body and a rotary drilling bit arranged at the bottom end of the rotary drilling drill body. The rotary drilling bit is provided with an axle wheel hole for the water pipe to pass through. The rotary drilling bit is divided into an upper and a lower layer by a partition, and an opening is opened on the upper side wall of the rotary drilling bit. The rotary drilling drill can conveniently moisten the mud blocks in the casing bite pile. If the water flow is large, the silt flushing effect can be achieved. The rotary drilling drill also includes a fixed sleeve arranged on the peripheral side of the rotary drilling bit, the fixed sleeve is also provided with an opening, and a cleaning component is arranged on the circumference of the fixed sleeve for removing the mud blocks in the casing bite pile.

[0017] In order to overcome the deficiencies of the prior art, the present invention further provides a method for cleaning the inner wall of a sleeve bite pile, and provides a device for cleaning the inner wall of a sleeve bite pile.

[0018] The above cleaning method has the following specific steps:

[0019] 1) A shaft wheel hole is provided on the rotary drilling drill bit, and a water pipe is provided through the shaft wheel hole;

[0020] 2) Install a fixed sleeve with a cleaning component around the rotary drill bit;

[0021] 3) The rotary drill with a fixed sleeve is sent into the casing bite pile, and the water in the water pipe enters the rotary drill bit and is sprayed out through the opening;

[0022] 4) While the fixed sleeve rotates and moves inward or outward, the cleaning component cleans the dirt inside the sleeve bite pile.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) The present invention is easy to assemble and disassemble through the setting of the overall structure, and can effectively penetrate into the casing bite pile for cleaning. The cleaning effect is good, and the pile quality defects caused by mud in the steel sleeve of the casing bite pile can be effectively reduced, and the engineering problems such as foundation pit leakage caused by the pile quality defects can be avoided.

[0025] 2) The present invention divides the rotary drilling bit into two layers, the upper layer of the rotary drilling bit can be sprayed with water to wet the dirt, and the lower layer can be effectively cleaned by the cleaning component, thereby further improving the cleaning effect.

[0026] 3) The present invention provides a buckle through the fixing sleeve, which is conducive to the detachable connection of the fixing sleeve to the rotary drilling drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0028] Figure 1 A cross-sectional view of the overall structure of the present invention;

[0029] Figure 2 The present invention Figure 1 A magnified view of the structure in the middle;

[0030] Figure 3 A top view of the overall structure of the present invention;

[0031] Among them: 1. shaft wheel hole, 2. opening, 3. first buckle, 4. pressurized water pipe, 5. partition, 6. flexible steel wire, 7. second buckle, 8. steel sleeve, 9. rotary drill. DETAILED DESCRIPTION

[0032] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a cleaning device for the inner wall of a casing bite pile.

[0035] In a typical implementation of the present application, Figure 1 As shown, a casing bite pile inner wall cleaning device comprises a rotary drilling bit arranged on a rotary drilling drill 9 and a fixed sleeve which can be detachably arranged on the circumferential direction of the rotary drilling bit, the fixed sleeve is provided with a cleaning component for cleaning the inner wall of the casing bite pile, the fixed sleeve and the rotary drilling bit are both provided with openings in the circumferential direction, a water pipe can be rotary drill bit to allow water to enter the rotary drilling bit and spray to the inner wall of the casing bite pile through the opening of the fixed sleeve, the rotary drilling bit is larger in size than the rotary drilling drill 9 and is cylindrical in shape.

[0036] The above-mentioned cleaning device, through the setting of the opening, can spray water to the inside of the casing bite pile, and then clean the dirt (mainly mud) inside the pile through the cleaning component. The cleaning effect is good, and can effectively reduce the pile quality defects caused by mud in the steel sleeve of the casing bite pile, and avoid engineering problems such as foundation pit leakage caused by pile quality defects.

[0037] In order to facilitate the removal of dirt, the cleaning component is a plurality of flexible steel wires 6, which are arranged on the surface of the fixed sleeve, and the opening 2 is set higher than the cleaning component, so that high-pressure water first passes through the opening 2 of the rotary drill bit and the fixed sleeve (the openings of the two are arranged coaxially) to infiltrate the dirt from above, and then as the rotary drill 9 is rotated out, the cleaning component quickly and effectively processes the wet dirt. The plurality of flexible steel wires 6 are evenly arranged on the surface of the fixed sleeve in an annular direction, and the flexible steel wires 6 are arranged obliquely downward.

[0038] The fixed sleeve is arranged at the bottom end of the rotary drill 9, i.e., the rotary drill bit, and covers the rotary drill bit. A partition plate 5 is arranged inside the rotary drill bit, and the partition plate 5 is tightly connected to the inside of the rotary drill bit to improve the sealing performance of the bottom plate of the first chamber (the opening of the rotary drill bit is arranged on the side wall of the first chamber), or to divide the rotary drill bit into the first chamber and the second chamber.

[0039] The cleaning component is arranged in the lower half of the fixed sleeve, and a protrusion is arranged in the upper half of the fixed sleeve. The protrusion is an annular protrusion with multiple layers, and adjacent layers are arranged at a set distance. The opening of the fixed sleeve is arranged between the two adjacent layers of protrusions to facilitate the removal of mud blocks.

[0040] The rotary drilling bit is provided with a shaft wheel hole, and the water pipe enters the shaft wheel hole from the top of the shaft wheel hole 1, and then enters the rotary drilling bit, and the water pipe enters the first chamber. A ball bearing is arranged in the shaft wheel hole, so that the water pipe does not rotate with the rotation of the rotary drilling drill. The shaft wheel hole is arranged in the first chamber, so that the water flows into the first chamber and then sprays out through the opening.

[0041] The fixing sleeve has a convex portion, and the rotary drilling drill 9 has a slot that matches the convex portion. The slot can be blocked by a blocking member such as a bolt. When dirt needs to be cleaned, the convex portion of the fixing sleeve cooperates with the slot to achieve the connection between the fixing sleeve and the rotary drilling drill or the rotary drilling rig head.

[0042] Alternatively, in another solution, in order to facilitate the detachable setting of the fixing sleeve, the fixing sleeve is covered on the rotary drilling drill bit. The fixing sleeve is a long strip structure that can be bent into a ring shape. Buckles are set at both ends of the long strip structure, and the fixing sleeve is set around the rotary drilling drill through the buckles. Figure 2 and Figure 3 As shown, the upper end and the lower end of the fixing sleeve are fixedly connected by a first buckle 3 and a second buckle 7 respectively. The first buckle 3 includes a female buckle fixed to one side of the fixing sleeve and a female buckle fixed to the other side of the fixing sleeve.

[0043] In addition, the present invention also provides a rotary drill, which includes a rotary drill body and a rotary drill bit arranged at the bottom end of the rotary drill body. The rotary drill bit is provided with an axle wheel hole for the water pipe to pass through. The rotary drill bit is divided into an upper and lower layer by a partition, and an opening is opened on the upper side wall of the rotary drill head. The rotary drill can facilitate the wetting of mud blocks in the casing bite pile. If the water flow is large, the silt flushing effect can be achieved. The rotary drill also includes a fixed sleeve arranged on the peripheral side of the rotary drill bit, the fixed sleeve also has an opening, and a cleaning component is arranged on the circumference of the fixed sleeve for removing mud blocks in the casing bite pile.

[0044] In order to overcome the deficiencies of the prior art, the present invention further provides a method for cleaning the inner wall of a sleeve bite pile, and provides a device for cleaning the inner wall of a sleeve bite pile.

[0045] The above cleaning method has the following specific steps:

[0046] 1) A shaft wheel hole 1 is set on the rotary drilling bit, and a water pipe is set through the shaft wheel hole 1;

[0047] 2) Install a fixed sleeve with a cleaning component around the rotary drill bit;

[0048] 3) The rotary drill with a fixed sleeve is sent into the casing bite pile, and the water in the water pipe enters the rotary drill bit and is sprayed out through the opening to spray the inner wall of the casing bite pile;

[0049] 4) While the fixed sleeve rotates and moves inward or outward, the cleaning component cleans the dirt inside the steel sleeve 8 of the casing bite pile.

[0050] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A casing bite pile inner wall cleaning device, characterized in that: The invention comprises a rotary drilling bit arranged on a rotary drilling drill and a fixed sleeve which can be detachably arranged in the circumferential direction of the rotary drilling bit, the fixed sleeve is provided with a cleaning component for cleaning the inner wall of the casing bite pile, the fixed sleeve and the rotary drilling bit are both provided with openings in the circumferential direction, and a water pipe can be rotated in the rotary drilling bit to allow water to enter the rotary drilling bit and be sprayed toward the inner wall of the casing bite pile through the opening of the fixed sleeve; The cleaning component is a plurality of flexible steel wires, which are arranged on the surface of the fixing sleeve. The cleaning component is arranged on the lower half of the fixing sleeve. The upper half of the fixing sleeve is provided with a protrusion, which is an annular protrusion or a single protrusion. The protrusion is provided with multiple layers, and the adjacent layers are arranged at a set distance. The opening of the fixing sleeve is arranged between the adjacent layers of protrusions, so that the fixing sleeve can enter the casing bite pile easily, and the flexible steel wire is arranged to be inclined downward. A partition is arranged inside the rotary drilling bit to divide the rotary drilling bit into an upper and a lower layer, so that the rotary drilling bit is divided into a first chamber and a second chamber; The rotary drilling bit is provided with a shaft wheel hole, the water pipe enters the shaft wheel hole from the top of the shaft wheel hole, and then enters the rotary drilling bit, the water pipe enters the first chamber, and a bearing is provided in the shaft wheel hole; The fixing sleeve is a long strip structure and can be bent into a ring shape. Buckles are arranged at both ends of the long strip structure, and the fixing sleeve is arranged around the rotary drilling drill through the buckles.

2. A casing bite pile inner wall cleaning device according to claim 1, characterized in that: The fixing sleeve is provided with a convex portion, and a slot cooperating with the convex portion is drilled in the rotary drilling.

3. A method for cleaning the inner wall of a casing bite pile, characterized in that: The inner wall cleaning device of a casing bite pile according to any one of claims 1 to 2 is adopted, and the specific steps are as follows: 1) A shaft wheel hole is provided on the rotary drilling drill bit, and a water pipe is provided through the shaft wheel hole; 2) Install a fixed sleeve with a cleaning component around the rotary drill bit; 3) Send the rotary drill with a fixed sleeve into the casing bite pile, and the water in the water pipe enters the rotary drill bit and sprays out through the opening; 4) While the fixed sleeve rotates and moves inward or outward, the cleaning component cleans the dirt inside the sleeve bite pile.

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