Cylindrical drill bit soil sampling device

Abstract

The utility model discloses a cylindrical drill bit soil sampling device which comprises a fixed seat and a fixed column, the bottom end of the fixed column is fixed on the fixed seat, a plurality of circumferential scraping rods are arranged on the circumferential side of the fixed column, a center sleeve is sleeved at the center of the top end of the fixed column, a plurality of guide rods are arranged on the circumferential side of the center sleeve, and the guide rods are arranged on the circumferential side of the center sleeve. The outer end of each guide rod is suspended out of the periphery of the center sleeve and inclines downwards, and the top faces of the guide rods are located on the same conical face. The cylindrical drill bit soil sampling device is favorable for preventing collision and improving the construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rotary drilling rig technology, specifically to a cylindrical drill bit soil extraction device. Background Technology

[0002] Rotary drilling rigs have a cylindrical drill bit at the top. During the construction of pile holes, some excavated sand, gravel, clay and other materials will temporarily stick to the inner wall of the drill bit. The conventional way is to swing the drill bit to shake out the attached materials. However, swinging the drill bit generates a lot of noise, which does not meet the requirements of municipal construction.

[0003] Chinese patent application number 202322343090.1 discloses a soil-removing device for a rotary drilling rig, including a collection device with a scraper inside. The scraper can extend into the drill bit and contact the inner wall of the drill bit. When the drill bit rotates, the scraper removes the deposits on the inner wall of the drill bit. This rotary drilling rig soil-removing device lacks a guide structure design during the insertion process into the drill bit. On the one hand, it is prone to collision with the end face of the drill bit, causing damage to both; on the other hand, it affects construction efficiency. Furthermore, during the rotation and scraping of the inner wall of the drill bit, it is prone to rigid collision with the inner wall of the drill bit, causing damage to both. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a cylindrical drill bit soil extraction device that is conducive to preventing collisions and improving construction efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A cylindrical drill bit soil sampling device includes a fixed base and a fixed column. The bottom end of the fixed column is fixed to the fixed base. Multiple circumferential scraping rods are provided around the periphery of the fixed column. A central sleeve is fitted at the center of the top of the fixed column. Multiple guide rods are provided around the periphery of the central sleeve. The outer ends of each guide rod protrude outward from the outer periphery of the central sleeve and tilt downward. The top surfaces of each guide rod are located on the same conical surface.

[0007] As a further improvement to the above technical solution:

[0008] The top of the fixed column is coaxially provided with an installation column, and the top of the installation column is coaxially provided with a shaft body. The diameter of the shaft body is smaller than that of the installation column. The center sleeve is centrally fitted onto the shaft body, and the top of the shaft body is provided with a limiting member.

[0009] The top end of the shaft is coaxially provided with a stud smaller than the diameter of the shaft, and the limiting member is a limiting nut that is threadedly connected to the stud.

[0010] The mounting column and the fixing column are detachably connected.

[0011] The central sleeve is fixed or rotated with the shaft.

[0012] Each of the guide rods is arranged at uniform intervals around the outer circumference of the central sleeve.

[0013] The circumferential scraper is arranged in multiple layers at intervals along the axial direction of the fixed column, and the circumferential scraper of each layer is evenly spaced around the center of the fixed column.

[0014] The mounting base is provided with a collection groove below the circumferential scraper.

[0015] The circumferential scraper has a radially retractable scraper block at its overhanging end, and a spring is provided between the scraper block and the circumferential scraper. The top surface of the outer end of the circumferential scraper is inclined downward.

[0016] The circumferential scraper rod has a mounting hole at its protruding end. A limit sleeve is threadedly connected to the inlet and outlet of the mounting hole. The scraper block is slidably placed in the mounting hole and extends outward through the limit sleeve. The spring is located in the mounting hole and abuts against the scraper block and the circumferential scraper rod. A limit ring is provided on the circumference of the scraper block. The limit ring is located in the mounting hole and abuts against the limit sleeve.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] This utility model discloses a cylindrical drill bit soil extraction device, which mainly consists of a scraping assembly composed of a fixed column and circumferential scraping rods around the fixed column, and a guiding assembly composed of a central sleeve and guide rods around the central sleeve. In use, the cylindrical drill bit, while rotating, is successively fitted onto the guiding assembly and the scraping assembly from top to bottom. The top surfaces of the guide rods in the guiding assembly guide the insertion of the cylindrical drill bit, allowing it to smoothly fit onto the scraping assembly below the guiding assembly. This helps prevent collisions between the scraping assembly and the end face of the cylindrical drill bit, improving construction efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a cylindrical drill bit soil sampling device according to this utility model.

[0020] Figure 2 yes Figure 1 An enlarged structural diagram of point A.

[0021] Figure 3 This is a top view of the guide rod of the cylindrical drill bit soil sampling device of this utility model.

[0022] Figure 4 This is a top view schematic diagram of the circumferential scraper of the cylindrical drill bit soil sampling device of this utility model.

[0023] Figure 5 This is another structural schematic diagram of the cylindrical drill bit soil sampling device of this utility model.

[0024] Figure 6 yes Figure 5 A magnified structural diagram at point B.

[0025] The labels in the diagram represent:

[0026] 1. Fixed base; 11. Collection trough; 2. Fixed column; 3. Circumferential scraper; 31. Mounting hole; 32. Limiting sleeve; 4. Center sleeve; 5. Guide rod; 6. Mounting column; 7. Shaft; 71. Stud; 8. Limiting component; 9. Scraper block; 91. Spring; 92. Limiting ring; 10. Cylindrical drill bit. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1:

[0032] Figures 1 to 4This illustration shows an embodiment of the cylindrical drill bit soil sampling device of this utility model. The device includes a fixed base 1 and a fixed column 2. The bottom end of the fixed column 2 is fixed to the fixed base 1. Multiple circumferential scraping rods 3 are provided around the periphery of the fixed column 2. A central sleeve 4 is fitted onto the top end of the fixed column 2. Multiple guide rods 5 are provided around the periphery of the central sleeve 4. The outer ends of each guide rod 5 protrude outwards from the periphery of the central sleeve 4 and tilt downwards. The top surfaces of each guide rod 5 are located on the same conical surface. This cylindrical drill bit soil sampling device mainly consists of a scraping assembly composed of the fixed column 2 and the circumferential scraping rods 3 around the fixed column 2, and a guiding assembly composed of the central sleeve 4 and the guide rods 5 around the central sleeve 4. In use, the cylindrical drill bit 10 can be rotated and successively fitted onto the guide assembly and the scraping assembly from top to bottom. The top surface of each guide rod 5 of the guide assembly guides the insertion of the cylindrical drill bit 10, allowing the cylindrical drill bit 10 to be smoothly fitted onto the scraping assembly below the guide assembly. This helps prevent the scraping assembly from colliding with the end face of the cylindrical drill bit 10 and improves construction efficiency.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, a mounting post 6 is coaxially provided at the top of the fixed post 2, and a shaft 7 is coaxially provided at the top of the mounting post 6. The diameter of the shaft 7 is smaller than that of the mounting post 6. A central sleeve 4 is fitted onto the shaft 7, and a limiting member 8 is provided at the top of the shaft 7. The mounting post 6 is fixed to the top of the fixed post 2 and is coaxial with the fixed post 2. The shaft 7 is fixed to the top of the mounting post 6 and is coaxial with the mounting post 6. The central sleeve 4 is fitted onto the shaft 7, and the guide rod 5 is fixed onto the central sleeve 4. The central sleeve 4 can be fixed to the shaft 7 (e.g., with a spline fit), so that the guide rod 5 fixed on the central sleeve 4 is also fixed. In this way, during the process of the cylindrical drill bit 10 being rotated in, the guide rod 5 can not only play a guiding role, but its protruding end can also scrape the material on the inner wall of the cylindrical drill bit 10. In other embodiments, the central sleeve 4 can also be rotatably fitted to the shaft 7 (e.g., with a rotating sleeve). In this way, during the process of the cylindrical drill bit 10 being rotated in, the guide rod 5 can rotate with the cylindrical drill bit 10, mainly playing a guiding role. The center sleeve 4 is mounted on the shaft 7 and is limited by the limiting component 8. When it needs to be replaced, remove the limiting component 8, then replace the center sleeve 4 and the guide rod 5, and reinstall the limiting component 8. The replacement is convenient.

[0034] Furthermore, such as Figure 2 As shown, in this embodiment, a stud 71 with a smaller diameter than the shaft 7 is coaxially provided at the top end of the shaft 7, and the limiting member 8 is a limiting nut that is threadedly connected to the stud 71. The structure is simple and easy to assemble and disassemble.

[0035] Furthermore, in this embodiment, the mounting post 6 and the fixing post 2 are detachably connected, such as by a threaded connection. If the center sleeve 4 is rotatably fitted with the shaft 7, the guide rod 5 will have difficulty effectively scraping off the deposits on the top of the cylindrical drill bit 10. In this case, the mounting post 6 can be removed to avoid obstructing the scraping depth of the fixing post 2 by the mounting post 6 and its components. Then, it can be re-sleeved to scrape off the deposits on the top of the cylindrical drill bit 10. Of course, in other embodiments, the mounting post 6 and the fixing post 2 can also be integrally formed, welded, or bolted together.

[0036] Furthermore, such as Figure 3 As shown, in this embodiment, each guide rod 5 is arranged at uniform intervals around the outer periphery of the central sleeve 4.

[0037] Furthermore, such as Figure 1 and Figure 4 As shown, in this embodiment, multiple layers of circumferential scraper rods 3 are arranged at intervals along the axial direction of the fixed column 2, and the circumferential scraper rods 3 of each layer are evenly spaced around the center of the fixed column 2. The circumferential scraper rods are fixed on the fixed column 2.

[0038] Furthermore, in this embodiment, the fixing base 1 is provided with a collection groove 11 below the circumferential scraper 3. The collection groove 11 is used to collect the scraped-off attachments.

[0039] Example 2:

[0040] Figure 5 and Figure 6 This paper illustrates another embodiment of the cylindrical drill bit soil sampling device of this utility model. The structure of the cylindrical drill bit soil sampling device in this embodiment is basically the same as that in Embodiment 1, except that: the cantilevered end of the circumferential scraper 3 is provided with a radially retractable scraper block 9, and a spring 91 is provided between the scraper block 9 and the circumferential scraper 3. The top surface of the outer end of the circumferential scraper 3 is inclined downward. After the scraper block 9 enters the cylindrical drill bit 10, the circumferential scraper 3 scrapes the inner wall of the cylindrical drill bit 10 through the scraper block 9. Since the scraper block 9 can overcome the elastic force of the spring 91 and retract radially, the scraper block 9 and the inner wall of the cylindrical drill bit 10 are in elastic contact rather than rigid contact, and there will be no rigid collision with the inner wall of the cylindrical drill bit 10, thus avoiding damage to both parties.

[0041] Furthermore, such as Figure 6 As shown, in this embodiment, the protruding end of the circumferential scraper rod 3 is provided with a mounting hole 31. A limit sleeve 32 is threadedly connected to the inlet and outlet of the mounting hole 31. The scraper block 9 is slidably disposed in the mounting hole 31 and extends outward through the limit sleeve 32. The spring 91 is located in the mounting hole 31 and abuts against the scraper block 9 and the circumferential scraper rod 3. A limit ring 92 is provided on the circumference of the scraper block 9. The limit ring 92 is located in the mounting hole 31 and abuts against the limit sleeve 32. When the scraper block 9 is replaced, the limit sleeve 32 is unscrewed, a new scraper block 9 is replaced, and then the limit sleeve 32 is reinstalled. The scraper block 9 is easy to replace.

[0042] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A cylindrical drill bit soil sampling device, characterized in that: It includes a fixed base (1) and a fixed column (2). The bottom end of the fixed column (2) is fixed on the fixed base (1). Multiple circumferential scraping rods (3) are provided on the periphery of the fixed column (2). A central sleeve (4) is provided at the top of the fixed column (2). Multiple guide rods (5) are provided on the periphery of the central sleeve (4). The outer ends of each guide rod (5) protrude outward from the outer periphery of the central sleeve (4) and tilt downward. The top surfaces of each guide rod (5) are located on the same conical surface.

2. The cylindrical drill bit soil sampling device according to claim 1, characterized in that: The top end of the fixed column (2) is coaxially provided with an installation column (6), and the top end of the installation column (6) is coaxially provided with a shaft (7). The diameter of the shaft (7) is smaller than that of the installation column (6). The center sleeve (4) is sleeved on the shaft (7), and the top end of the shaft (7) is provided with a limiting member (8).

3. The cylindrical drill bit soil sampling device according to claim 2, characterized in that: The top end of the shaft (7) is coaxially provided with a stud (71) smaller than the diameter of the shaft (7), and the limiting member (8) is a limiting nut that is threadedly connected to the stud (71).

4. The cylindrical drill bit soil sampling device according to claim 2, characterized in that: The mounting post (6) and the fixing post (2) are detachably connected.

5. The cylindrical drill bit soil sampling device according to claim 2, characterized in that: The center sleeve (4) is fixed or rotated with the shaft (7).

6. The cylindrical drill bit soil sampling device according to claim 1, characterized in that: Each of the guide rods (5) is arranged at uniform intervals around the outer periphery of the central sleeve (4).

7. The cylindrical drill bit soil sampling device according to claim 1, characterized in that: The circumferential scraper (3) is arranged in multiple layers at intervals along the axial direction of the fixed column (2), and the circumferential scraper (3) of each layer is evenly spaced around the center of the fixed column (2).

8. The soil sampling device with a cylindrical drill bit according to any one of claims 1 to 7, characterized in that: The fixed base (1) is provided with a collection groove (11) below the circumferential scraper (3).

9. The soil sampling device with a cylindrical drill bit according to any one of claims 1 to 7, characterized in that: The circumferential scraper (3) has a radially extendable scraper block (9) at its overhanging end. A spring (91) is provided between the scraper block (9) and the circumferential scraper (3). The top surface of the outer end of the circumferential scraper (3) is inclined downward.

10. The cylindrical drill bit soil sampling device according to claim 9, characterized in that: The circumferential scraper (3) has a mounting hole (31) at its protruding end. A limit sleeve (32) is threadedly connected to the inlet and outlet of the mounting hole (31). The scraper block (9) is slidably disposed in the mounting hole (31) and extends outward through the limit sleeve (32). The spring (91) is located in the mounting hole (31) and abuts against the scraper block (9) and the circumferential scraper (3). A limit ring (92) is provided on the periphery of the scraper block (9). The limit ring (92) is located in the mounting hole (31) and abuts against the limit sleeve (32).

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