Pile hole cleaning tool for miniature steel pipe pile

Abstract

The utility model belongs to the technical field of micro steel pipe pile hole cleaning, and particularly relates to a pile hole cleaning tool for a micro steel pipe pile. The driving motor drives the spiral drilling rod to rotate around the axis of the spiral drilling rod, and stones, gravels and dust in a pile hole continuously enter the pile casing from the lower end of the pile casing under the action of the spiral drilling rod, are spirally lifted upwards and are finally discharged out of the pile hole from the soil discharging cylinder. And stones, gravels and dust in the pile hole can be conveniently cleaned. The device has the advantages of convenience in operation, good cleaning effect, less raised dust and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning the pile hole of a micro steel pipe pile, and in particular relates to a pile hole cleaning tool for a micro steel pipe pile. Background Art

[0002] Micro steel pipe piles are bored piles with a smaller diameter, which are generally 10 to 30 cm in diameter and have a slenderness ratio greater than 30. First, a down-the-hole drill is used to drill a base hole in the soil, and then the steel pipe embedded parts are placed vertically into the base hole. Finally, concrete is poured between the inner wall of the base hole and the outer wall of the steel pipe to complete the construction of the micro steel pipe pile. Micro steel pipe piles use their own good bending, pull-out and shear resistance, have low requirements for rock and soil layers, and have the advantages of fast construction speed, high safety, and environmental friendliness. After the construction of the micro steel pipe pile is completed, there are usually more stones, gravel, and dust in the pile hole, which need to be cleaned before the next installation operation can be carried out. The pile hole of the micro steel pipe pile refers to the space surrounded by the inner wall of the steel pipe and the bottom wall of the base hole. The existing practice is to install an air pipe at the outlet of the air pump, extend the air pipe into the pile hole and blow air into the pile hole to blow out the stones, gravel, and dust in the pile hole. When the stones in the pile hole are large, it is not easy to blow them out. In the actual operation process, there is still a disadvantage of large dust. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a pile hole cleaning tool for a micro steel pipe pile, which is convenient for cleaning stones, gravel and dust in the pile hole.

[0004] The utility model solves the technical problem by adopting the following technical solution: a pile hole cleaning tool for a micro steel pipe pile comprises a vertically arranged spiral drill rod and a casing sleeved outside the spiral drill rod; there is a distance between the outer edge of the spiral blade of the spiral drill rod and the inner wall of the casing; the drill bit at the lower end of the spiral drill rod extends out from the lower end opening of the casing;

[0005] It also includes a mounting seat connected to the casing, wherein the connection between the casing and the mounting seat is close to the upper end of the casing, and there is a first spacing between the connection and the drill bit at the lower end of the auger rod that is greater than the depth of the pile hole; a driving motor located above the casing is installed on the mounting seat, and the output shaft of the driving motor is connected to the upper end of the auger rod through a connecting structure;

[0006] It also includes a soil discharge tube arranged on the outer side of the casing and connected to the inner cavity of the casing, the connecting end of the soil discharge tube is connected to the casing and close to the upper end of the casing, the unearthed end of the soil discharge tube extends in a direction away from the casing and is higher than the lower end of the casing; there is a second distance between the unearthed end of the soil discharge tube and the lower end drill bit of the spiral drill rod that is greater than the depth of the pile hole.

[0007] Furthermore, the connection structure comprises a vertically arranged connection sleeve, the lower end of which is welded to the upper end of the auger rod;

[0008] The output shaft of the driving motor extends into the connecting sleeve and is connected to the connecting sleeve by bolts.

[0009] Further, the mounting seat includes a mounting frame, a connecting rod and a handle;

[0010] The mounting frame is located above the casing and is connected to the casing via a connecting rod; the connection between the casing and the connecting rod is close to the upper end of the casing;

[0011] The driving motor is mounted on the mounting frame;

[0012] The handles are arranged on the mounting frame, and two handles are arranged at intervals in the horizontal direction and in pairs.

[0013] Furthermore, the soil discharge tube has an unearthed end extending downward in a direction away from the casing, and the unearthed end is higher than a connection point between the casing and the connecting rod.

[0014] Furthermore, the mounting frame is a horizontally arranged and crisscrossed frame structure.

[0015] Furthermore, it also includes a control button arranged on the mounting frame and close to the handle, and the control button is electrically connected to the drive motor.

[0016] Furthermore, the auger rod is a double auger rod.

[0017] Furthermore, the auger rod is a single auger rod.

[0018] Furthermore, the casing and the soil spill tube are made of steel.

[0019] Furthermore, the auger rod is coaxially arranged with the casing.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a pile hole cleaning tool for a micro steel pipe pile, which is convenient for cleaning stones, gravel and dust in the pile hole, and has the advantages of convenient operation, good cleaning effect and less dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of one embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of another embodiment of the utility model;

[0023] Figure 3It is a top view schematic diagram of the utility model;

[0024] Figure numerals: 1-auger rod; 2-casing; 3-mounting seat; 301-mounting frame; 302-connecting rod; 303-handle; 4-driving motor; 5-soil discharge cylinder; 6-connecting sleeve; 7-bolt; 8-control button. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 , 2 , and embodiments further illustrate the utility model.

[0026] The pile hole cleaning tool for micro steel pipe piles comprises a vertically arranged spiral drill rod 1, and a casing 2 sleeved outside the spiral drill rod 1; there is a distance between the outer edge of the spiral blade of the spiral drill rod 1 and the inner wall of the casing 2; the lower end drill bit of the spiral drill rod 1 extends out from the lower end opening of the casing 2; and also comprises a mounting seat 3 connected to the casing 2, the connection between the casing 2 and the mounting seat 3 is close to the upper end of the casing 2, and there is a first distance between the connection and the lower end drill bit of the spiral drill rod 1 that is greater than the depth of the pile hole; the mounting seat 3 is provided with a plurality of holes. A driving motor 4 is installed above the casing 2, and the output shaft of the driving motor 4 is connected to the upper end of the spiral drill rod 1 through a connecting structure; it also includes a soil discharge tube 5 arranged on the outer side of the casing 2 and connected to the inner cavity of the casing 2, the connecting end of the soil discharge tube 5 is connected to the casing 2 and close to the upper end of the casing 2, the unearthed end of the soil discharge tube 5 extends in a direction away from the casing 2 and is higher than the lower end of the casing 2; there is a second spacing between the unearthed end of the soil discharge tube 5 and the lower end drill bit of the spiral drill rod 1 that is greater than the depth of the pile hole.

[0027] The mounting seat 3 provides mounting support for the casing 2 and the driving motor 4. Specifically, the upper end of the spiral blade of the auger rod 1 is lower than the upper end of the casing 2, and the rod body of the auger rod 1 extends upward from the upper end of the casing 2. The connecting end of the soil discharge tube 5 is connected to the casing 2 by welding, and the connecting end of the soil discharge tube 5 is arranged corresponding to the upper end of the spiral blade of the auger rod 1. The unearthed end of the soil discharge tube 5 extends horizontally or downward in a direction away from the casing 2, preferably extends downward. The unearthed end of the soil discharge tube 5 extends downward in a direction away from the casing 2, and the unearthed end of the soil discharge tube 5 can be flush with or higher than the connection between the casing 2 and the mounting seat 3. The outer diameter of the casing 2 is smaller than the pile hole diameter of the micro steel pipe pile to ensure that the insertion section of the casing 2 can be smoothly inserted into the pile hole. The connection between the casing 2 and the mounting seat 3 is close to the upper end of the casing 2, and there is a first spacing between the connection and the lower end drill bit of the spiral drill rod 1 that is greater than the depth of the pile hole. There is a second spacing between the unearthed end of the soil discharge tube 5 and the lower end drill bit of the spiral drill rod 1 that is greater than the depth of the pile hole, so that the lower end drill bit of the spiral drill rod 1 can reach the bottom of the pile hole. The driving motor 4 drives the spiral drill rod 1 to rotate around its own axis. Under the action of the spiral drill rod 1, the stones, gravel and dust in the pile hole continuously enter the casing 2 from the lower end of the casing 2, and are lifted upward by the spiral, and finally discharged from the soil discharge tube 5 to the outside of the pile hole. The casing 2 can also prevent the spiral drill rod 1 from damaging the inner wall of the pile hole of the micro steel pipe pile.

[0028] The output shaft of the drive motor 4 can be connected to the upper end of the auger rod 1 by a key. Preferably, the connection structure includes a vertically arranged connecting sleeve 6, the lower end of which is welded to the upper end of the auger rod 1; the output shaft of the drive motor 4 extends into the connecting sleeve 6 and is connected to the connecting sleeve 6 by a bolt 7. The output shaft of the drive motor 4, the connecting sleeve 6 and the auger rod 1 are coaxially arranged. Specifically, the lower end of the connecting sleeve 6 is welded to the upper end of the rod body of the auger rod 1.

[0029] The mounting base 3 has a variety of structural forms. Preferably, the mounting base 3 includes a mounting frame 301, a connecting rod 302 and a handle 303; the mounting frame 301 is located above the casing 2 and is connected to the casing 2 through the connecting rod 302; the connection between the casing 2 and the connecting rod 302 is close to the upper end of the casing 2; the drive motor 4 is mounted on the mounting frame 301; the handle 303 is arranged on the mounting frame 301, and two handles 303 are arranged at intervals in the horizontal direction and arranged in pairs. The mounting frame 301 provides mounting support for the drive motor 4. The number of connecting rods 302 can be set according to actual needs, and it is only necessary to ensure that the mounting frame 301 is stably connected to the casing 2. The unearthed end of the soil discharge barrel 5 extends downward in a direction away from the casing 2, and the unearthed end can be flush with the connection between the casing 2 and the connecting rod 302. Preferably, the unearthed end of the soil discharge barrel 5 extends downward in a direction away from the casing 2, and the unearthed end is higher than the connection between the casing 2 and the connecting rod 302. The handle 303 and the mounting frame 301 can be an integral structure formed in one piece, or can be connected by welding. The handle 303 is convenient for the user to operate by hand. Preferably, the mounting frame 301 and the casing 2 are both connected by welding to the connecting rod 302.

[0030] The mounting frame 301 may be a horizontally arranged plate-like structure. Preferably, the mounting frame 301 is a horizontally arranged and crisscrossed frame structure.

[0031] For the convenience of operation, preferably, a control button 8 is further included which is arranged on the mounting frame 301 and close to the handle 303, and the control button 8 is electrically connected to the drive motor 4. The control button 8 is electrically connected to the drive motor 4, specifically, the control button 8 is electrically connected to the controller of the drive motor 4. The user holds the handle 303 and controls the start and stop of the drive motor 4 by pressing the control button 8, which is convenient for operation.

[0032] Specifically, the auger rod 1 is a double auger rod or a single auger rod.

[0033] The casing 2 and the soil discharge tube 5 can be made of hard alloy. Preferably, the casing 2 and the soil discharge tube 5 are made of steel.

[0034] As a preferred embodiment, the auger rod 1 and the casing 2 are coaxially arranged.

[0035] The embodiments of the specific implementation are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. All equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A pile hole cleaning tool for micro steel pipe piles, characterized in that: The invention comprises a vertically arranged spiral drill rod (1), and a casing (2) sleeved outside the spiral drill rod (1); a distance is provided between the outer edge of the spiral blade of the spiral drill rod (1) and the inner wall of the casing (2); and a drill bit at the lower end of the spiral drill rod (1) protrudes from the lower end opening of the casing (2); It also comprises a mounting seat (3) connected to the casing (2), wherein the connection between the casing (2) and the mounting seat (3) is close to the upper end of the casing (2), and there is a first spacing between the connection and the drill bit at the lower end of the spiral drill rod (1) that is greater than the depth of the pile hole; a driving motor (4) located above the casing (2) is mounted on the mounting seat (3), and the output shaft of the driving motor (4) is connected to the upper end of the spiral drill rod (1) via a connecting structure; It also comprises a soil discharge tube (5) which is arranged on the outer side of the casing (2) and is connected to the inner cavity of the casing (2); the connecting end of the soil discharge tube (5) is connected to the casing (2) and is close to the upper end of the casing (2); the unearthed end of the soil discharge tube (5) extends in a direction away from the casing (2) and is higher than the lower end of the casing (2); and there is a second spacing between the unearthed end of the soil discharge tube (5) and the lower end drill bit of the spiral drill rod (1) which is greater than the depth of the pile hole.

2. The pile hole cleaning tool for micro steel pipe piles according to claim 1, characterized in that: The connection structure comprises a vertically arranged connection sleeve (6), the lower end of the connection sleeve (6) being welded to the upper end of the auger rod (1); The output shaft of the driving motor (4) extends into the connecting sleeve (6) and is connected to the connecting sleeve (6) via bolts (7).

3. The pile hole cleaning tool for micro steel pipe piles according to claim 1, characterized in that: The mounting seat (3) comprises a mounting frame (301), a connecting rod (302) and a handle (303); The mounting frame (301) is located above the protective tube (2) and is connected to the protective tube (2) via a connecting rod (302); the connection between the protective tube (2) and the connecting rod (302) is close to the upper end of the protective tube (2); The driving motor (4) is mounted on the mounting frame (301); The handles (303) are arranged on the mounting frame (301), and two handles (303) are arranged at intervals in the horizontal direction and are arranged in pairs.

4. The pile hole cleaning tool for micro steel pipe piles according to claim 3, characterized in that: The soil discharge tube (5) has an unearthed end extending downward in a direction away from the casing (2), and the unearthed end is higher than the connection point between the casing (2) and the connecting rod (302).

5. The pile hole cleaning tool for micro steel pipe piles as claimed in claim 3, characterized in that: The mounting frame (301) is a horizontally arranged and crisscrossed frame structure.

6. The pile hole cleaning tool for micro steel pipe piles according to claim 3, characterized in that: It also includes a control button (8) arranged on the mounting frame (301) and close to the handle (303), and the control button (8) is electrically connected to the drive motor (4).

7. The pile hole cleaning tool for micro steel pipe piles according to claim 1, characterized in that: The spiral drill rod (1) is a double spiral drill rod.

8. The pile hole cleaning tool for micro steel pipe piles according to claim 1, characterized in that: The auger rod (1) is a single auger rod.

9. The pile hole cleaning tool for micro steel pipe piles according to claim 1, characterized in that: The casing (2) and the soil discharge tube (5) are made of steel.

10. The pile hole cleaning tool for micro steel pipe piles according to claim 1, characterized in that: The spiral drill rod (1) and the casing (2) are coaxially arranged.

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