Hole cleaning tool for pile inspection construction

Abstract

The hole cleaning tool comprises a vertical rod and an isolation pipe used for being inserted into a drill hole in an attached mode, and the vertical rod is not in contact with the isolation pipe; a powerful fan with downward wind power is arranged at the bottom of the vertical rod, a pushing pipe is arranged on the outer side of the vertical rod in a sleeving mode, a plurality of supporting rods are evenly arranged at the bottom of the pushing pipe, the top of each supporting rod is hinged to the bottom of the pushing pipe through a first hinge joint, a sliding groove is formed in the surface of each supporting rod, and a groove opening of each sliding groove faces the vertical rod; the sliding groove is connected with a sliding block in a sliding mode, the sliding block is connected to the bottom edge of the vertical rod through a second hinge joint, and the longitudinal faces of the adjacent supporting rods are connected through a sediment recycling piece. The hole wall of a drilled hole is protected through the pipe wall of the isolation pipe, meanwhile, large-particle sediments move in the isolation pipe in a wind pressure mode in the isolation pipe, the sediments are cleaned through the sediment recycling piece unfolded at the bottom of the isolation pipe, and therefore the hole cleaning speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of pile inspection construction, in particular to a hole cleaning tool used for pile inspection construction. Background Art

[0002] Pile inspection is a key link in ensuring the construction quality of pile foundation projects, which involves the inspection of pile body integrity, bearing capacity and hole quality. The pile inspection construction process mainly includes four core links: hole drilling and casing burial, hole cleaning and sediment control, steel cage and concrete construction and multi-stage inspection. Among them, when cleaning the hole, the hole should be cleaned twice. The first time is to use the drill rod to remove large particles of sediment after the hole is formed. The second time is after the steel cage and the guide tube are installed, and the slurry is pressed into the guide tube for further cleaning to ensure that the sediment at the bottom of the hole is ≤100mm and the mud density is controlled at 1.10-1.15. Among them, the first time the hole is cleaned to remove large particles of sediment, the method used is to pour well-proportioned mud (density 1.05-1.10g / cm 3 ), and then send the drill bit into the borehole to stir the mud. At the same time, the borehole must not touch the hole wall to avoid damaging the hole wall. Due to the stirring of the borehole, the large particles of sediment at the bottom of the borehole float on the mud during the stirring process, so that the large particles of sediment are removed, and then the mud is pumped out of the borehole. Therefore, the first hole cleaning process in pile inspection construction is very cumbersome, and it is easy to damage the hole wall, requiring a long construction period. In the overall construction process, pile inspection work needs to be carried out many times, and each time the pile is inspected, multiple boreholes need to be cleaned, which wastes construction time and is not conducive to efficient construction. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a hole cleaning tool for pile inspection construction in view of the deficiencies in the above-mentioned prior art, in which the wall of the drilled hole is protected by the wall of the isolation tube, and at the same time, large particles of sediment are moved in the isolation tube by means of wind pressure inside the isolation tube, and the sediment is cleaned by a sediment recovery sheet unfolded at the bottom of the isolation tube, thereby improving the hole cleaning rate.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hole cleaning tool for pile inspection construction, comprising a vertical rod and an isolation tube for fitting and inserting into a borehole, wherein the vertical rod has no contact with the isolation tube;

[0005] A powerful blower with downward wind force is provided at the bottom of the vertical rod. A push tube is sleeved outside the vertical rod. A plurality of support rods are evenly arranged at the bottom of the push tube. The top of each support rod is respectively hinged to the bottom of the push tube through a first hinge joint. A chute is arranged on the surface of the support rod along its length direction. The notch of the chute faces the vertical rod. A slider is slidably connected to the chute. The slider is connected to the bottom edge of the vertical rod through a second hinge joint. The adjacent support rods are respectively connected through a sediment recovery sheet on the longitudinal surface.

[0006] Further, the sediment recovery sheet is grid-shaped and made of elastic material.

[0007] Furthermore, the diameter of the grid holes of the sediment recovery sheet does not exceed 10 millimeters.

[0008] Further, a plurality of grooves are evenly arranged on the outer side surface of the isolation tube. A first ball is arranged inside each groove. A part of the first ball is located outside the notch of the groove.

[0009] Further, a second ball is also arranged at the bottom of the support rod.

[0010] Further, the outer surface of the vertical rod is slidably connected to the inner side surface of the push tube, and the position between the vertical rod and the push tube is limited by a limiting mechanism.

[0011] Further, a support frame is arranged at the top of the isolation tube. The support frame is used to support the push tube so that the push tube can move up and down in the isolation tube.

[0012] Furthermore, a damping block is arranged at the position where the support frame contacts the push tube.

[0013] Furthermore, a limiting block is also arranged on the upper surface of the position where the support frame contacts the isolation tube. The side surface of the limiting block contacts the outer pipe wall of the push tube.

[0014] Further, both the first hinge joint and the second hinge joint are universal hinge joints.

[0015] The present invention has the following advantages compared with the prior art:

[0016] The present invention provides a hole cleaning tool for pile inspection construction. By inserting a separation pipe against the hole wall of the drill hole, the pipe wall of the separation pipe protects the hole wall of the drill hole. At the same time, a vertical rod is used to send a powerful blower to the bottom of the drill hole. The powerful wind blows up the sediment in the drill hole, causing the sediment to move inside the separation pipe in the drill hole under the action of the wind. Then, a push pipe is used to control the opening of a sediment recovery piece at the bottom of the separation pipe, so that after the sediment recovery piece is opened, it closes the bottom of the separation pipe. At this time, the moving sediment is located above the sediment recovery piece. Moving the opened sediment recovery piece upward along the separation pipe can clean the sediment in the drill hole, thereby improving the hole cleaning rate and quickly completing the pile inspection work.

[0017] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a longitudinal sectional view of the overall structure of a hole cleaning tool for pile inspection construction provided by the present invention.

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Figure 3 It is a schematic structural view of each support rod unfolded in the present invention.

[0021] Figure 4 It is a top view of the overall structure of a hole cleaning tool for pile inspection construction provided by the present invention.

[0022] Description of the reference numerals:

[0023] 1, vertical rod; 2, push pipe; 3, support frame; 4, limit block; 5, first ball; 6, separation pipe; 7, support rod; 8, sediment recovery piece; 9, chute; 10, second hinge joint; 11, slider; 12, first hinge joint; 13, second ball; 14, damping block; 15, powerful blower. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] As Figures 1-4 shown, a hole cleaning tool for pile inspection construction provided by the present invention includes a vertical rod 1 and a separation pipe 6 for fitting and inserting into a drill hole, and the vertical rod 1 is not in contact with the separation pipe 6;

[0025] A powerful blower 15 with downward wind force is provided at the bottom of the vertical rod 1. A push tube 2 is sleeved outside the vertical rod 1. A plurality of support rods 7 are evenly arranged at the bottom of the push tube 2. The top of each support rod 7 is hinged to the bottom of the push tube 2 through a first hinge joint 12. A chute 9 is arranged on the surface of the support rod 7 along its length direction. The notch of the chute 9 faces the vertical rod 1. A slider 9 is slidably connected to the chute 9. The slider 9 is connected to the bottom edge of the vertical rod 1 through a second hinge joint 10. Adjacent support rods 7 are respectively connected by a sediment recovery sheet 8 on the longitudinal surface.

[0026] During the construction process, workers need to insert the isolation tube 6 into the drill hole. When inserting, the isolation tube 6 needs to fit the hole wall of the drill hole. During the insertion process, the isolation tube 6 will also clean some sediment on the hole wall of the drill hole and make it fall to the bottom of the drill hole. Then, after inserting the isolation tube 6, the pipe wall of the isolation tube 6 protects the hole wall of the drill hole, so that when the sediment moves under the action of wind force subsequently, it will not damage the hole wall of the drill hole. Then, the worker inserts the vertical rod 1 into the inside of the isolation tube 6, so that the vertical rod 1 sends the powerful blower 15 to the bottom of the drill hole, and controls the opening of the powerful blower 15, so that the powerful blower 15 blows up the sediment in the drill hole through the strong wind force. After the powerful blower 15 is turned on for a period of time, generally about one minute, the sediment moves under the action of wind force inside the isolation tube 6 in the drill hole. At this time, the worker presses down the push tube 2. When the push tube 2 is pressed down, the support rod 7, under the combined action of the first hinge joint 12, the second hinge joint 10, the chute 9 and the slider 11, makes the support rod 7 spread around the vertical rod 1, so that the sediment recovery sheet 8 between adjacent support rods 7 unfolds to form a plane at the bottom of the isolation tube 6. The plane formed by the unfolding of the sediment recovery sheet 8 closes the bottom of the isolation tube 6, and the fine gap in the plane does not exceed 10 millimeters. Due to the action of wind force, at this time, the moving sediment is above the sediment recovery sheet 8. At this time, the powerful blower 15 can be controlled to close. The worker pulls the vertical rod 1 and the push tube 2 upward at the same time, so that the sediment recovery sheet 8 moves upward, and then the sediment in the drill hole is cleaned. After the worker cleans the sediment on the sediment recovery sheet 8 on the ground, the hole cleaning work is completed. At this time, the isolation tube 6 is taken out, and at this time, the drill hole is clean.

[0027] In the present invention, by inserting the isolation pipe 6 along the hole wall of the drill hole, the pipe wall of the isolation pipe 6 protects the hole wall of the drill hole. Meanwhile, the vertical rod 1 is used to send the powerful blower 15 to the bottom of the drill hole, and the sediment in the drill hole is blown up by the strong wind, so that the sediment moves inside the isolation pipe 6 in the drill hole under the action of the wind. Then, the sediment recovery piece 8 at the bottom of the isolation pipe 6 is controlled to open by the push pipe 2. After the sediment recovery piece 8 is opened, it seals the bottom of the isolation pipe 6. At this time, the moving sediment is located above the sediment recovery piece 8. By moving the opened sediment recovery piece 8 upward along the isolation pipe 6, the sediment in the drill hole can be cleaned, thereby improving the rate of hole cleaning and quickly completing the pile inspection work.

[0028] In the present invention, in order to save certain manufacturing costs and also to make the gas flow in the drill hole more uniform, when the sediment recovery piece 8 is not unfolded, the sediment recovery piece 8 fits more closely to the vertical rod 1.

[0029] In the present invention, the sediment recovery piece 8 is set to be mesh-shaped and is made of an elastic material. The elastic material can make the sediment recovery piece 8 fit more closely to the vertical rod 1 when the sediment recovery piece 8 is not unfolded, and the mesh shape can make the gas flow in the drill hole more uniform.

[0030] Furthermore, the diameter of the mesh holes of the sediment recovery piece 8 does not exceed 10 millimeters. Here, 10 millimeters means that after the sediment recovery piece 8 is unfolded, the diameter of the mesh holes does not exceed 10 millimeters, so that all large-particle sediment can be filtered out.

[0031] Meanwhile, in order to make the insertion of the isolation pipe 6 smoother and prevent the isolation pipe 6 from damaging the hole wall of the drill hole, a number of grooves are evenly arranged on the outer side of the isolation pipe 6, and a first ball 5 is arranged inside each groove, and a part of the first ball 5 is located outside the notch of the groove.

[0032] When inserting the isolation pipe 6, due to the action of the first ball 5, the isolation pipe 6 can be made not to generate friction with the hole wall, thereby protecting the hole wall of the drill hole, and also making the insertion of the isolation pipe 6 smoother. At the same time, since the outer diameter of the isolation pipe 6 is slightly smaller than the diameter of the drill hole, during the insertion process, due to the rolling action of the first ball 5, the hole wall can also be evenly stressed to maintain the hole wall. Some uneven places on the hole wall are rolled flat by the rolling of the first ball 5.

[0033] Meanwhile, a second ball 13 is also provided at the bottom of the support rod 7. When the sediment recovery piece 8 is unfolded, the second ball 13 is brought into contact with the bottom of the drill hole, so that when the sediment recovery piece 8 is unfolded, since the second ball 13 rolls on the bottom of the hole, the unfolding of the support rod 7 is smoother, without damaging the under-reaming of the drill hole, and it can be ensured that the sediment recovery piece 8 is unfolded at the lowest part of the drill hole, and all the sediment at the bottom of the drill hole is also made to be located above the plane where the sediment recovery piece 8 is unfolded, which helps to improve the cleanliness of the drill hole and at the same time improves the working efficiency of the workers.

[0034] In addition, to facilitate the operation of the workers in the present invention, the outer surface of the vertical rod 1 is slidably connected to the inner side surface of the push tube 2, and the position between the vertical rod 1 and the push tube 2 is limited by a limiting mechanism. After the limitation, the worker only needs to lift the push tube 2 to take out the sediment in the drill hole, which is very convenient and reduces the number of construction workers. After the sediment recovery piece 8 is unfolded, the position between the vertical rod 1 and the push tube 2 is limited, so that the plane where the sediment recovery piece 8 is unfolded remains unchanged all the time, which improves the efficiency when the worker takes out the sediment and does not cause the sediment to fall due to the closing of the sediment recovery piece 8.

[0035] Meanwhile, to facilitate the construction, in the present invention, a support frame 3 is provided at the top of the isolation tube 6, and the support frame 3 is used to support the push tube 2 so that the push tube 2 can move up and down in the isolation tube 6. This can limit the position of the push tube 2 on the horizontal plane, so that the push tube 2 is always located on the axis of the isolation tube 6, and the isolation tube 6, the push tube 2 and the vertical rod 1 are always coaxial, which is conducive to the work of unfolding the sediment recovery piece 8, making the work of unfolding the sediment recovery piece 8 in place at one time without repeated rework and improving the construction efficiency.

[0036] Wherein, a damping block 14 is provided at the position where the support frame 3 contacts the push tube 2. The damping block 14 can make the push tube 2 have a certain resistance when moving up and down, so that the worker does not need to hold the push tube 2 by hand in real time during construction. A limiting block 4 is also provided on the upper surface of the position where the support frame 3 contacts the isolation tube 6, and the side surface of the limiting block 4 contacts the outer pipe wall of the push tube 2. The limiting block 4 makes the push tube 2 always in the longitudinal position, so that the push tube 2 is always coaxial with the isolation tube 6 and the position will not shift.

[0037] In addition, to make the work proceed more smoothly and the sediment recovery piece 8 unfold more smoothly and labor-savingly when it is unfolded, both the first hinge joint 12 and the second hinge joint 10 are universal hinge joints.

[0038] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments based on the technical essence of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hole cleaning tool for pile inspection construction, characterized in that: It comprises a vertical rod (1) and an isolation tube (6) for being inserted into a borehole, wherein the vertical rod (1) is not in contact with the isolation tube (6); A powerful fan (15) with downward wind force is arranged at the bottom of the vertical rod (1), a push tube (2) is sleeved on the outside of the vertical rod (1), and a plurality of support rods (7) are evenly arranged at the bottom of the push tube (2), and the top of each support rod (7) is hinged to the bottom of the push tube (2) through a first hinge joint (12), and a slide groove (9) is arranged on the surface of the support rod (7) along its length direction, and the groove of the slide groove (9) faces the vertical rod (1), and the slide groove (9) is slidably connected to a slider (9), and the slider (9) is connected to the bottom edge of the vertical rod (1) through a second hinge joint (10), and the adjacent support rods (7) are connected on the longitudinal surfaces by a sediment recovery sheet (8).

2. A hole cleaning tool for pile inspection construction according to claim 1, characterized in that: The sediment recovery sheet (8) is in a grid shape and is made of an elastic material.

3. A hole cleaning tool for pile inspection construction according to claim 2, characterized in that: The diameter of the mesh holes of the sediment recovery sheet (8) does not exceed 10 mm.

4. A hole cleaning tool for pile inspection construction according to claim 1, characterized in that: The outer side surface of the isolation tube (6) is evenly provided with a plurality of grooves, each of which has a first rolling ball (5) disposed inside, and a portion of the first rolling ball (5) is located outside the notch of the groove.

5. A hole cleaning tool for pile inspection construction according to claim 1, characterized in that: The bottom of the support rod (7) is also provided with a second ball (13).

6. A hole cleaning tool for pile inspection construction according to claim 1, characterized in that: The outer surface of the vertical rod (1) is slidably connected to the inner surface of the push tube (2), and the position between the vertical rod (1) and the push tube (2) is limited by a limiting mechanism.

7. A hole cleaning tool for pile inspection construction according to claim 1, characterized in that: A support frame (3) is provided on the top of the isolation tube (6), and the support frame (3) is used to support the push tube (2) so that the push tube (2) moves up and down in the isolation tube (6).

8. A hole cleaning tool for pile inspection construction according to claim 7, characterized in that: A damping block (14) is provided at the position where the support frame (3) contacts the push tube (2).

9. A hole cleaning tool for pile inspection construction according to claim 7, characterized in that: A limiting block (4) is also provided on the upper surface of the position where the support frame (3) contacts the isolation tube (6), and the side surface of the limiting block (4) contacts the outer tube wall of the push tube (2).

10. A hole cleaning tool for pile inspection construction according to claim 1, characterized in that: The first hinged joint (12) and the second hinged joint (10) are both universal hinged joints.

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