Hole cleaning tool for micropore cast-in-place pile foundation

Abstract

The utility model belongs to the technical field of micropore cast-in-place pile construction, and particularly relates to a micropore cast-in-place pile foundation hole cleaning tool which comprises a spiral drill rod, and the spiral drill rod comprises a drill rod body and a spiral blade. A rotating handle is arranged at the upper end of the drill rod body, a sleeve is arranged on the periphery of the spiral blade in a sleeved mode, the peripheral face of the spiral blade is completely attached to the inner wall of the sleeve, and the cutter end of the spiral blade protrudes out of the sleeve. The sleeve is arranged on the periphery of the spiral blade, so that the spiral channel is defined by the drill rod body, the spiral blade and the sleeve, soil is prevented from falling into a pile foundation hole from the outer edge of the spiral blade in the screwing-in process of the device, and the pile hole cleaning quality and cleaning efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of microporous cast-in-place pile construction, and in particular relates to a microporous cast-in-place pile foundation hole cleaning tool. Background Art

[0002] During the construction of photovoltaic power stations, pile foundation construction is required. After the pile foundation construction is completed, the solar panels will be installed on the pile foundation. The pile foundation for installing solar panels generally has a diameter of 20cm. To ensure its stability, the depth of the pile should exceed 1.7m. Correspondingly, the pile foundation hole diameter is about 20cm, the hole depth should be greater than or equal to 1.7m, and the hole is drilled using a spiral drill rod. Photovoltaic power stations need to be set up in areas with sufficient sunshine and long sunshine hours. Such areas are usually located in arid deserts or Gobi deserts with little rain. The soil is loose, and the pile hole collapse and excessively thick soil in the hole often occur during the pile hole construction process. The hole needs to be cleaned before the embedded parts can be placed for pile foundation pouring.

[0003] At present, the construction site uses a spiral drill to clean the hole. The drill rod of the spiral drill includes a drill rod body and a spiral blade. The lower end of the drill rod body has a drill tip, and the lower end of the spiral blade is a cutter end. The drill tip is located below the cutter end of the spiral blade. During the hole cleaning process, the vibration of the spiral drill will still cause the soil around the pile hole to be disturbed, causing the hole wall to collapse; when there is a lot of soil in the hole, the soil on the spiral blade is not only difficult to rise along the spiral blade, but also falls to the bottom of the pit from the gap between the spiral blade and the hole wall, resulting in poor hole cleaning effect, and even multiple repeated hole cleaning is required, delaying the construction progress and wasting manpower; in addition, the pitch of the spiral blade of the existing spiral drill is generally 15cm-20cm. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a micro-porous cast-in-place pile foundation hole cleaning tool to improve the pile foundation hole cleaning quality and efficiency.

[0005] The utility model solves the technical problem by adopting the following technical solution: a micro-porous cast-in-place pile foundation hole cleaning tool, comprising a spiral drill rod, wherein the spiral drill rod comprises a drill rod body and spiral blades;

[0006] The spiral drill rod is connected with a sleeve, which is sleeved on the outer circumference of the spiral blade, the outer circumference of the spiral blade is in contact with the inner wall of the sleeve, and the cutting end of the spiral blade protrudes from the sleeve, and the drill rod body, the spiral blade and the sleeve form a spiral channel for accommodating soil;

[0007] A turning handle is arranged at the upper end of the drill rod body.

[0008] Furthermore, the drill rod body is a hollow rod.

[0009] Furthermore, the turning handle is a turning rod welded to the drill rod body, and the turning rod is perpendicular to the drill rod body.

[0010] Furthermore, the pitch of the spiral blade is 8cm-10cm.

[0011] Furthermore, the spiral blade is a double spiral blade, and two cutting ends of the double spiral blade are distributed on both sides of the drill pipe body.

[0012] Furthermore, the upper end of the sleeve is provided with tie rods arranged along its radial direction, and the sleeve is connected to the drill pipe body through the tie rods.

[0013] Furthermore, a plurality of tie bars are provided, and the plurality of tie bars are evenly distributed along the circumference of the drill pipe body.

[0014] Furthermore, the upper end of the spiral blade is located in the sleeve.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: providing a micro-porous cast-in-place pile foundation hole cleaning tool, by arranging a sleeve on the periphery of the spiral blade so that the drill rod body, the spiral blade and the sleeve form a spiral channel, thereby preventing the soil from falling from the outer edge of the spiral blade into the pile foundation hole during the screwing process of the device, thereby improving the pile hole cleaning quality and cleaning efficiency; by reducing the pitch of the spiral blade to slow down the slope of the spiral channel, it is easier for the soil to move upward along the spiral channel, saving manpower; by setting the spiral blade as a double spiral blade, manpower is saved and the hole cleaning efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional structural schematic diagram of another embodiment of the utility model;

[0019] Figure numerals: 1-auger rod; 11-drill rod body; 12-spiral blade; 2-handle; 3-sleeve; 4-tension rod. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] As attached Figure 1-3As shown, a micro-hole cast-in-place pile foundation hole cleaning tool includes an auger rod 1, the auger rod 1 includes a drill rod body 11 and a spiral blade 12; the auger rod 1 is connected with a sleeve 3, the sleeve 3 is sleeved on the outer periphery of the spiral blade 12, the outer peripheral surface of the spiral blade 12 is in contact with the inner wall of the sleeve 3 and the cutting end of the spiral blade 12 protrudes from the sleeve 3, the drill rod body 11, the spiral blade 12 and the sleeve 3 form a spiral channel for accommodating soil; the upper end of the drill rod body 11 is provided with a turning handle 2. The length of the drill rod body 11 should be greater than the pile foundation hole depth, and the outer diameter of the sleeve 3 should be slightly smaller than the pile foundation hole diameter, and the difference is generally set to 4cm, and the single-side spacing is 2cm to avoid direct contact with the hole wall and cause hole collapse.

[0022] When cleaning the hole, the auger rod 1 extends into the pile foundation hole, and the tip of the drill rod body 11 is inserted into the virtual soil layer at the bottom of the pile foundation hole. The tip of the drill rod body 11 is used to position the auger rod 1 in the pile foundation hole. The auger rod 1 is rotated by turning the handle 2, and the cutter end of the spiral blade 12 rotates synchronously and screws into the soil layer. As the auger rod 1 rotates, the soil body continuously enters the spiral channel surrounded by the drill rod body 11, the spiral blade 12 and the sleeve 3 from the cutter end and moves upward along the spiral channel. In this process, the sleeve 3 blocks the soil body in the spiral channel to prevent the soil body from falling. In addition, the outer wall of the sleeve 3 has a smooth transition to reduce the disturbance of the soil body on the hole wall. After the hole is cleaned, the handle 2 is pulled up to pull the entire device out of the pile foundation hole, and the hole is cleaned. The utility model is only suitable for cleaning holes of micro-porous cast-in-place piles. It is light in weight and can be manually held for operation. The utility model arranges the sleeve 3 on the outer periphery of the spiral blade 12 so that the drill rod body 11, the spiral blade 12 and the sleeve 3 form a spiral channel, thereby preventing soil from falling from the outer edge of the spiral blade into the pile foundation hole during the screwing process of the device, thereby improving the cleaning quality and cleaning efficiency of the pile hole.

[0023] The drill rod body 11 can be hollow or solid. Preferably, the drill rod body 11 is a hollow rod to reduce the weight of the device and facilitate manual handling and use. The turning handle 2 is used to facilitate the rotation of the entire device. It can be a ring structure connected to the drill rod body 11 through a connecting rod, or a plate structure or a disc structure. It can be connected to the drill rod body 11 by welding or bolting. Preferably, the turning handle 2 is a turning rod welded to the drill rod body 11. The turning rod is perpendicular to the drill rod body 11. The turning rod 11 is rotated along the axial direction of the drill rod body 11 to rotate the entire device. The structure is simple and durable.

[0024] Preferably, the pitch of the spiral blade 12 is 8cm-10cm. By reducing the pitch of the spiral blade 12, the slope of the spiral channel is reduced, so that the soil is more easily moved upward along the spiral channel, saving manpower. When the spiral blade 12 is a single spiral blade, the device needs to be rotated around its axis for one circle to complete the soil cleaning. Figure 3 As shown, the spiral blade 12 is a double spiral blade, and the two cutting ends of the double spiral blade are distributed on both sides of the drill pipe body 11. The device can complete the work of one spiral blade rotation in half a rotation, saving manpower and improving hole cleaning efficiency.

[0025] The sleeve 3 can be directly welded to the spiral blade 12, or it can be welded to the drill rod body 11 through structures such as ring plates and reinforcing ribs. Preferably, the upper end of the sleeve 3 is provided with tie bars 4 arranged along its radial direction, and the sleeve 3 is connected to the drill rod body 11 through the tie bars, which has a simple structure and improves the connection stability of the sleeve 13. The tie bars 4 can be one or more. Preferably, the tie bars 4 are provided with multiple ones, and the multiple tie bars 4 are evenly distributed along the circumference of the drill rod body 11, further improving the stability and reliability of the structure. The upper end of the spiral blade 12 can extend out of the sleeve 3. Preferably, the upper end of the spiral blade 12 is located in the sleeve 3 to avoid scratching the operator during manual operation, which is safer and more reliable.

Claims

1. A micro-porous cast-in-place pile foundation hole cleaning tool, comprising a spiral drill rod (1), wherein the spiral drill rod (1) comprises a drill rod body (11) and a spiral blade (12); characterized in that: The spiral drill rod (1) is connected to a sleeve (3), the sleeve (3) is sleeved on the outer circumference of the spiral blade (12), the outer circumference of the spiral blade (12) is in contact with the inner wall of the sleeve (3), and the cutting end of the spiral blade (12) protrudes from the sleeve (3), and the drill rod body (11), the spiral blade (12) and the sleeve (3) form a spiral channel for accommodating soil; The upper end of the drill rod body (11) is provided with a turning handle (2).

2. The microporous cast-in-place pile foundation hole cleaning tool according to claim 1, characterized in that: The drill rod body (11) is a hollow rod.

3. The microporous cast-in-place pile foundation hole cleaning tool according to claim 1 is characterized by: The turning handle (2) is a turning rod welded to the drill rod body (11), and the turning rod is perpendicular to the drill rod body (11).

4. The microporous cast-in-place pile foundation hole cleaning tool according to claim 1, characterized in that: The pitch of the spiral blade (12) is 8cm-10cm.

5. The microporous cast-in-place pile foundation hole cleaning tool according to claim 1, characterized in that: The spiral blade (12) is a double spiral blade, and two cutting ends of the double spiral blade are distributed on both sides of the drill rod body (11).

6. The microporous cast-in-place pile foundation hole cleaning tool according to claim 1, characterized in that: The upper end of the sleeve (3) is provided with tie bars (4) arranged along its radial direction, and the sleeve (3) is connected to the drill rod body (11) via the tie bars.

7. The microporous cast-in-place pile foundation hole cleaning tool according to claim 6, characterized in that: A plurality of the tie bars (4) are provided, and the plurality of the tie bars (4) are evenly distributed along the circumference of the drill rod body (11).

8. The microporous cast-in-place pile foundation hole cleaning tool according to any one of claims 1 to 7, characterized in that: The upper end of the spiral blade (12) is located inside the sleeve (3).

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