Three-wing connection rock core pipe stable scraper type coreless drill bit

Abstract

The utility model is suitable for the technical field of drilling, and provides a three-wing rock core connecting pipe stable scraper type coreless drill bit which comprises a rotating rod, an annular groove is formed in the lower end of the rotating rod, a threaded groove is formed in the outer wall of the annular groove, and three evenly-distributed first scrapers are fixedly connected to the upper end of the rotating rod. The side wall of the rotating rod is fixedly connected with three evenly-distributed second scraping plates, the second scraping plates correspond to the first scraping plates in a one-to-one mode, the upper ends of the first scraping plates are fixedly connected with the lower ends of the first scraping plates, the first scraping plates and the second scraping plates are provided with communicated containing grooves, and a plurality of evenly-distributed scrapers are fixedly connected into the containing grooves. The drilling device has the advantages of being high in stability and drilling diameter uniformity.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a three-wing core barrel-connected stable scraper type coreless drill bit. Background Art

[0002] A coreless drill is a special drilling tool that does not have a traditional center core, hence the name. The design of this drill bit gives it unique cutting performance and a wide range of applications.

[0003] During drilling operations, especially under complex geological conditions such as high-density slurry soil layers, high-density clay geology, and complex drift geology, traditional drill bits are prone to deflection during the drilling process due to uneven force or complex geological conditions, resulting in drilling difficulties or poor drilling results.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a three-wing core barrel stabilized scraper coreless drill bit to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of the embodiments of the present utility model is to provide a three-wing core barrel-connected stable scraper-type coreless drill bit, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A three-wing core barrel-connected stable scraper-type coreless drill bit includes a rotating rod, a ring groove is provided at the lower end of the rotating rod, a threaded groove is provided on the outer wall of the ring groove, three evenly distributed first scrapers are fixedly connected to the upper end of the rotating rod, three evenly distributed second scrapers are fixedly connected to the side wall of the rotating rod, and the second scrapers correspond to the first scrapers one by one, the upper end of the first scraper is fixedly connected to the lower end of the first scraper, and the first scraper and the second scraper are provided with connected placement grooves, and a plurality of evenly distributed scrapers are fixedly connected in the placement grooves.

[0008] According to a further technical solution, the scraper is made of cemented carbide, carbon tool steel or high-speed steel.

[0009] According to a further technical solution, the first scraper is in a curved state as a whole and is inclined in a clockwise direction along the rotating rod.

[0010] According to a further technical solution, the side of each second scraper away from the rotating rod is in an inclined state, and the length of the bottom end surface of the second scraper is longer than the length of the upper end surface of the second scraper.

[0011] According to a further technical solution, the first scraper and the second scraper are of an integrated structure.

[0012] According to a further technical solution, a first steep slope is provided on both the first scraper and the second scraper, and the height of the first steep slope close to one end of the scraper is between the blade of the scraper and the inner wall of the placement groove.

[0013] A further technical solution is that a slope is provided on the top of the scraper so that the end of the scraper away from the first steep slope is smaller in height than the end close to the first steep slope, and the end of the scraper away from the first steep slope is provided with a second steep slope.

[0014] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0015] 1. The three first scrapers cooperate to improve the stability and anti-deflection ability of the drill bit, thereby reducing the risk of deflection during the drilling process. The length of the bottom end surface of the second scraper is longer than the length of the upper end surface of the second scraper, which helps to better cut the soil during the drilling process, thereby accelerating the drilling speed and improving operating efficiency.

[0016] 2. Through the sequential cutting of the scrapers on the first scraper and the second scraper, the soil is gradually cut and the drilling range is expanded, ensuring the accuracy and uniformity of the drilling diameter.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0020] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged three-dimensional structure at A in the middle;

[0021] Figure 4 It is a three-dimensional structural diagram of part of the structure of the utility model;

[0022] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged three-dimensional structure at point B in the middle.

[0023] In the figure: 1, rotating rod; 2, first scraper; 3, second scraper; 4, placement groove; 5, first steep slope; 6, scraper; 7, second steep slope; 8, slope; 9, thread groove; 10, ring groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] like Figure 1-5 As shown, an embodiment of the utility model provides a three-wing core tube stabilized scraper-type coreless drill bit, including a rotating rod 1, a ring groove 10 is provided at the lower end of the rotating rod 1, and a threaded groove 9 is provided on the outer wall of the ring groove 10. The drill bit is connected to the external device through the threaded groove 9, and three evenly distributed first scrapers 2 are fixedly connected to the upper end of the rotating rod 1, and three evenly distributed second scrapers 3 are fixedly connected to the side wall of the rotating rod 1, and the second scrapers 3 correspond to the first scrapers 2 one by one, and the upper end of the first scraper 2 is fixedly connected to the lower end of the first scraper 2, and the first scraper 2 and the second scraper 3 are provided with a connected placement groove 4, and a plurality of evenly distributed scrapers 6 are fixedly connected in the placement groove 4.

[0027] Furthermore, the scraper 6 is made of cemented carbide, carbon tool steel or high-speed steel.

[0028] Further, such as Figure 1 and Figure 2 As shown, the first scraper 2 is in a curved state as a whole and tilted clockwise along the rotating rod 1. This design not only improves the stability of the drill bit, but also enhances its anti-deflection ability.

[0029] Furthermore, the side of each second scraper 3 away from the rotating rod 1 is inclined, and the length of the bottom end surface of the second scraper 3 is longer than the length of the upper end surface of the second scraper 3. This design helps to better cut the soil during the drilling process.

[0030] Furthermore, the first scraper 2 and the second scraper 3 are an integrated structure.

[0031] Furthermore, a first steep slope 5 is provided on both the first scraper 2 and the second scraper 3, and the height of the first steep slope 5 close to one end of the scraper 6 is located between the blade of the scraper 6 and the inner wall of the placement groove 4. This design helps to better guide the scraper to cut the soil during the drilling process and improve the cutting efficiency.

[0032] Further, such as Figure 5As shown, a slope 8 is provided at the top of the scraper 6, so that the height of the end of the scraper 6 away from the first steep slope 5 is smaller than the end close to the first steep slope 5. This design allows the scraper to transition more smoothly when cutting the soil, further improving the cutting efficiency and the stability of the drill bit. The scraper 6 is provided with a second steep slope 7 at the end away from the first steep slope 5.

[0033] Specifically, the stability and anti-deflection ability of the drill bit are improved by cooperating with the three first scrapers 2, thereby reducing the risk of deflection during the drilling process. The length of the bottom end face of the second scraper 3 is longer than the length of the upper end face of the second scraper 3, which helps to better cut the soil during the drilling process, thereby accelerating the drilling speed and improving the working efficiency; through the sequential cutting of the scrapers 6 on the first scraper 2 and the second scraper 3, the soil is gradually cut and the drilling range is expanded, ensuring the accuracy and uniformity of the drilling diameter.

[0034] The working principle of the utility model is: the coreless drill bit rotates and descends clockwise, cutting the soil through the scrapers 6 on multiple first scrapers 2, then the scraper 6 at the upper end of the first scraper 2 cuts the soil, and then gradually transitions to the scraper 6 at the connection between the first scraper 2 and the second scraper 3. After that, as the drill bit continues to penetrate deeper, the scraper 6 on the second scraper 3 continues to cut the surrounding soil, expanding the range of the large hole rotation, thereby ensuring the smooth progress of the drilling process and achieving the expected drilling diameter. During this process, the scraper 6 first cuts the soil at the end away from the first steep slope 5, and then gradually transitions to the end of the scraper 6 close to the first steep slope 5 to cut the soil.

[0035] The circuits, electronic components and modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-wing core barrel stabilized scraper-type coreless drill bit, comprising a rotating rod (1), a ring groove (10) is provided at the lower end of the rotating rod (1), and a thread groove (9) is provided on the outer wall of the ring groove (10), characterized in that: The upper end of the rotating rod (1) is fixedly connected to three evenly distributed first scrapers (2), and the side wall of the rotating rod (1) is fixedly connected to three evenly distributed second scrapers (3), and the second scrapers (3) correspond to the first scrapers (2) one by one. The upper end of the first scraper (2) is fixedly connected to the lower end of the first scraper (2), and the first scraper (2) and the second scraper (3) are provided with a communicating placement groove (4), and a plurality of evenly distributed scrapers (6) are fixedly connected in the placement groove (4).

2. The three-wing core barrel stabilized scraper type coreless drill bit according to claim 1, characterized in that: The scraper (6) is made of hard alloy, carbon tool steel or high-speed steel.

3. The three-wing core barrel stabilized scraper type coreless drill bit according to claim 1, characterized in that: The first scraper (2) is in a curved state as a whole and is inclined in a clockwise direction along the rotating rod (1).

4. The three-wing core barrel stabilized scraper type coreless drill bit according to claim 3, characterized in that: The side of each second scraper (3) away from the rotating rod (1) is in an inclined state, and the length of the bottom end surface of the second scraper (3) is longer than the length of the upper end surface of the second scraper (3).

5. The three-wing core barrel stabilized scraper type coreless drill bit according to claim 4, characterized in that: The first scraper (2) and the second scraper (3) are an integrated structure.

6. The three-wing core barrel stabilized scraper type coreless drill bit according to claim 5, characterized in that: A first steep slope (5) is provided on both the first scraper (2) and the second scraper (3), and the height of one end of the first steep slope (5) close to the scraper (6) is located between the blade of the scraper (6) and the inner wall of the placement groove (4).

7. The three-wing core barrel stabilized scraper type coreless drill bit according to claim 6, characterized in that: The top of the scraper (6) is provided with a slope (8), and the height of the end of the scraper (6) away from the first steep slope (5) is smaller than that of the end close to the first steep slope (5). The end of the scraper (6) away from the first steep slope (5) is provided with a second steep slope (7).

Images