A multifunctional drill bit for geotechnical engineering

Abstract

The present invention relates to a multifunctional drill bit for geotechnical engineering, comprising: a central drill member, a side drill member, a transmission member and a driving member; the central drill member is used to form a first drilling area; a plurality of side drill members are provided, and the plurality of side drill members are used to form a second drilling area of ​​variable size; the transmission member is used to connect the central drill member with the plurality of side drill members; the driving member is used to drive the central drill member to move along a first dimension; the transmission member is also used to enable the plurality of side drill members to expand and move along a second dimension when the central drill member moves along the first dimension; the transmission member is also used to form a discharge space between the central drill member and the side drill members; a plurality of intermediate drill members are provided on the transmission member. The beneficial effect of the present application is that the size of the drill bit can be changed, that is, one tool is used to drill holes of different diameters, the operation is more convenient, the versatility is strong, and the rock debris discharge itself can also improve the drilling efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling, and in particular to a multifunctional drill bit for geotechnical engineering. Background Art

[0002] In geotechnical engineering, drill bits are often used to drill holes in rock and soil layers. Drilling is done by using a high-speed rotating drill bit. However, during the drilling operation, the hole diameter obtained is closely related to or even directly matched with the drill bit size. Therefore, when drilling holes of different sizes, it is often necessary to replace drill bits of different sizes. Since the drill bit is large and heavy, the drill bit replacement process is time-consuming and labor-intensive. At the same time, the existing drill bit has poor efficiency in removing rock debris when drilling in rock and soil layers, resulting in accumulation of rock debris at the front end. If it is not removed in time, the drilling efficiency is affected and the drill bit is made to work for a long time, thereby increasing its wear. Summary of the Invention

[0003] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0004] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a multifunctional drill bit for geotechnical engineering, including: a middle drill member, a side drill member, a transmission member and a driving member; the middle drill member is used to form a first drilling area; a plurality of side drill members are provided, and a plurality of the side drill members are used to form a second drilling area of ​​variable size; the transmission member is used to connect the middle drill member with a plurality of the side drill members; the driving member is used to drive the middle drill member to move along a first dimension; the transmission member is also used to enable the plurality of the side drill members to expand and move along a second dimension when the middle drill member moves along the first dimension; the transmission member is also used to form a discharge space between the middle drill member and the side drill member; a plurality of intermediate drill members are provided on the transmission member; the intermediate drill members are used to form an intermediate drilling area in the discharge space.

[0005] Specifically, the plurality of side drill pieces are distributed in a circular array along the circumference of the middle drill piece; the second dimension is a direction away from the middle drill piece; and the movement of the plurality of side drill pieces along the second dimension is that the plurality of side drill pieces move away from the middle drill piece at the same time.

[0006] Specifically, the driving member is used to move the middle drill member to a first position and a second position; the transmission member is used to form an inclined first middle drilling surface in the middle drilling area between the middle drill member and the side drill member when the middle drill member is in the first position; the transmission member is used to form a horizontal second middle drilling surface in the middle drilling area between the middle drill member and the side drill member when the middle drill member is in the second position.

[0007] Specifically, the first intermediate drilling surface and the second intermediate drilling surface are both connected to the first drilling area and the second drilling area.

[0008] Specifically, the transmission member is further used to make the second drilling area close to the first drilling area when the middle drilling member is located in the first position; the transmission member is further used to make the second drilling area away from the first drilling area when the middle drilling member is located in the first position.

[0009] Specifically, the transmission member includes a first hinged portion, a second hinged portion and a connecting portion; the first hinged portion is hinged to the middle drill member, and the second hinged portion is hinged to the side drill member; the connecting portion is used to connect the first hinged portion with the second hinged portion; a plurality of transmission members are provided, and each transmission member is used to connect one of the side drill members with the middle drill member.

[0010] Specifically, a plurality of the intermediate drill pieces are provided, and a plurality of the intermediate drill pieces are installed on each of the connecting parts.

[0011] Specifically, the middle drill piece is provided with rotating blades; the rotating blades are directly or indirectly fixed to the middle drill piece.

[0012] Specifically, the multifunctional drill bit for geotechnical engineering also includes a mounting shell, and multiple side drill parts are mounted in the mounting shell; a rotating power part is provided in the mounting shell, and the rotating power part is used to drive the side drill parts and the middle drill part to rotate; the driving part is provided in the mounting shell, and the driving part is rotatably connected to the middle drill part; the rotating fan blade is provided on the output end of the driving part and is rotatably connected to the output end of the driving part.

[0013] Specifically, the rotating blades are provided in plurality and distributed in a linear array along the first dimension.

[0014] The beneficial effects of the present invention are:

[0015] The size of the drill bit can be changed, so that holes of different diameters can be drilled with one tool, which is more convenient to operate and has strong versatility. It can also improve drilling efficiency while achieving rock debris removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0018] In the attached figure:

[0019] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0020] Figure 2 It is a schematic structural diagram of a part of the embodiment, mainly showing a part of the structure inside the installation shell;

[0021] Figure 3 It is a schematic structural diagram of a part of the embodiment, mainly showing the structures of the driving member, the middle drill member and the side drill member;

[0022] Figure 4 This is a schematic structural diagram of a portion of the embodiment, mainly showing the structures of the middle drill piece, the side drill piece, and the transmission piece;

[0023] Figure 5 This is a schematic structural diagram of a portion of the embodiment, mainly showing the structure of the middle drill member, the side drill members and the transmission member when the middle drill member is in the first position;

[0024] Figure 6 This is a schematic structural diagram of a portion of the embodiment, mainly showing the structure of the middle drill member, the side drill member and the transmission member when the middle drill member is located in the second position;

[0025] Figure 7 This is a schematic structural diagram of a portion of an embodiment, mainly showing a structure in which a plurality of drilling portions are formed on the side of a side drilling member;

[0026] Figure 8 This is a schematic structural diagram of a portion of the embodiment, mainly showing the structure of the connection between the transmission member and the middle drill member;

[0027] Figure 9 It is a structural diagram of a part of the embodiment, mainly showing the structure of the transmission member;

[0028] Figure 10 This is a schematic structural diagram of a part of the embodiment, mainly showing Figure 1 The cross-sectional structure of

[0029] Figure 11 yes Figure 10 A magnified view of part A;

[0030] Figure 12 This is a structural diagram of a part of the embodiment, mainly showing the Figure 10 structure. DETAILED DESCRIPTION

[0031] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0032] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0033] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0034] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] Reference Figure 1-12 As shown, the multifunctional drill bit for geotechnical engineering according to the present invention comprises: a central drill member 1, a side drill member 2, a transmission member 3, and a drive member 4. The central drill member 1 is used to form a first drilling area. Multiple side drill members 2 are provided, each of which is used to form a second drilling area of ​​variable size. The central drill member 1 is a circular drill bit, and multiple side drill members 2 can be combined to form an annular drill bit. When the size of the multiple side drill members 2 changes, the multiple side drill members 2 separate, and each side drill member 2 is an arc-shaped drill bit.

[0037] The transmission member 3 is used to connect the central drill member 1 with the plurality of side drill members 2. The driving member 4 is used to drive the central drill member 1 to move along the first dimension. The transmission member 3 is also used to enable the plurality of side drill members 2 to expand and move along the second dimension when the central drill member 1 moves along the first dimension. The expansion of the side drill members 2 along the second dimension causes the second drilling area to become larger or smaller. In this embodiment, the transmission member 3 is a power structure, such as an electric push rod. When the driving member 4 drives the central drill member 1 to move along the first dimension, the transmission member 3 drives the side drill members 2 to expand and move along the second dimension.

[0038] The transmission member 3 also forms a drainage space between the central drill member 1 and the side drill member 2. This drainage space is formed by the gap between the central drill member 1 and the side drill member 2 and is used to discharge drilling dust and debris. Multiple intermediate drill members are provided on the transmission member 3 to form an intermediate drilling area within the drainage space. This creates a complete drilling area with the first drilling area, the intermediate drilling area, and the side drilling area, achieving better drilling results.

[0039] Specifically, the plurality of side drill members 2 are arranged in an array along the circumference of the central drill member 1; the second dimension is a direction away from the central drill member 1; and the movement of the plurality of side drill members 2 along the second dimension is the simultaneous movement of the plurality of side drill members 2 away from the central drill member 1. By distributing the side drill members in an array along the circumference of the central drill member, a drill head with a diameter that can be increased or decreased can be formed during actual drilling.

[0040] Example 2

[0041] The difference from Example 1 is:

[0042] The driving member 4 is used to move the central drilling member 1 between a first position and a second position. The transmission member 3 is used to form an inclined first intermediate drilling surface in the central drilling area between the central drilling member 1 and the side drilling member 2 when the central drilling member 1 is in the first position. The transmission member 3 is used to form a horizontal second intermediate drilling surface in the central drilling area between the central drilling member 1 and the side drilling member 2 when the central drilling member 1 is in the second position. The first intermediate drilling surface and the second intermediate drilling surface are both connected to the first drilling area and the second drilling area.

[0043] In a specific embodiment, the transmission member 3 includes a first hinge portion 32, a second hinge portion 33, and a connecting portion 34. Both the first hinge portion 32 and the second hinge portion 33 are hinge seats, while the connecting portion 34 is a rod. The first hinge portion 32 is hinged to the central drill member 1, and the second hinge portion 33 is hinged to the side drill member 2. The connecting portion 34 is used to connect the first hinge portion 32 and the second hinge portion 33. Multiple transmission members 3 are provided, each of which is used to connect one of the side drill members 2 to the central drill member 1.

[0044] The multifunctional drill bit for geotechnical engineering also includes a mounting housing 5, in which the plurality of side drill elements 2 are mounted. A rotating power element 6 is disposed within the mounting housing 5, configured to drive the side drill elements 2 and the central drill element 1 in rotation. A driving element 4 is disposed within the mounting housing 5 and rotatably connected to the central drill element 1. The driving element 4 can be selected from a pneumatic cylinder, a hydraulic cylinder, or an electric push rod. The output end of the driving element 4 is rotatably connected to the central drill element 1, such that the driving element 4 propels the central drill element 1 in motion without affecting its own rotation. In this embodiment, the rotatable connection between the output end of the driving element 4 and the central drill element 1 is achieved using a thrust bearing or a universal ball joint. The mounting housing 5 includes a plurality of abutment plates 51 fixed to the side drill elements 2. The mounting housing 5 also includes a plurality of guide rods 7, which extend through the abutment plates 51 and the side drill elements 2 to guide movement of the side drill elements 2 along the second dimension. A spring 71 is provided between the mounting housing 5 and the abutment plate 51. The spring 71 is sleeved on the guide rod 7. One end of the spring 71 abuts the mounting housing 5, and the other end abuts the abutment plate 51. This allows the abutment plate 51 to be separated and the distance therebetween to be variable. The abutment plate 51 is used to mount the edge drill 2. An elastic membrane 52 is provided between the mounting housing 5 and the abutment plate 51 to seal the gap between the mounting housing 5 and the abutment plate 51.

[0045] Among them, the rotating power member 6 is used to drive the mounting housing 5 to rotate. The rotation of the mounting housing 5 drives the side drill member 2 to rotate, thereby causing both the side drill member 2 and the middle drill member 1 to rotate. The mounting housing 5 is mounted on the mounting seat 9. The mounting seat 9 is a seat body with a mounting cavity inside. The mounting housing 5 is rotatably connected to the mounting seat 9. The rotating power member 6 is installed in the mounting seat 9. The rotating power member 6 includes a motor, a first gear, and a second gear. The first gear is fixed to the mounting housing 5, the second gear is meshed with the first gear, the motor is fixed to the mounting seat 9, and the second gear is fixed to the output end of the motor, so that the motor drives the mounting housing 5 to rotate through the first gear and the second gear.

[0046] When the middle drill piece 1 moves, the connecting portion 34 will drive the multiple side drill pieces 2 to move together, wherein the guide rod 7 limits the side drill pieces 2 to achieve the movement of the side drill pieces 2 along the second dimension.

[0047] The transmission member 3 is also used to make the second drilling area close to the first drilling area when the middle drill member 1 is in the first position; the transmission member 3 is also used to make the second drilling area away from the first drilling area when the middle drill member 1 is in the first position.

[0048] In some embodiments, the central drill member 1 is provided with rotating blades 8, which are directly or indirectly fixed to the central drill member 1. The rotating blades 8 are disposed on the output end of the driver 4 and are rotationally connected thereto. The provision of rotating blades 8 allows suction air to be generated in the discharge area during drilling of the central drill member 1 and the side drill members 2, sucking in dust and debris generated during drilling. This acts as a self-contained cleaning system, facilitating the timely removal of debris and preventing it from affecting drilling quality.

[0049] In some embodiments, a plurality of the intermediate drill pieces are provided, and a plurality of the intermediate drill pieces are installed on each of the connecting portions 34 .

[0050] In some embodiments, the rotating blades 8 are provided in plurality and distributed in a linear array along the first dimension.

[0051] In other embodiments, multiple drilling portions are provided on the side of the side drill member 2. The drilling portion in this embodiment refers to a spherical protrusion. The drilling portion on the side drill member 2 is used to abut against the inner wall of the hole when the side drill member 2 is located in the hole. Subsequently, the side drill member 2 moves along the second dimension, causing the drilling portion on the side drill member 2 to expand the hole from the inside, thereby realizing the integration of drilling and expanding.

[0052] In other embodiments, a bevel is formed on the edge of the middle drill piece 1 and the side drill piece 2, and the bevel is similar to a chamfer. A plurality of drill parts are provided on the bevel.

[0053] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A multifunctional drill bit for geotechnical engineering, characterized by: include: A middle drill piece (1), a side drill piece (2), a transmission piece (3) and a driving piece (4); The middle drill piece (1) is used to form a first drilling area; a plurality of the side drill pieces (2) are provided, and the plurality of side drill pieces (2) are used to form a second drilling area of ​​variable size; The transmission member (3) is used to connect the middle drill member (1) with the plurality of side drill members (2); the driving member (4) is used to drive the middle drill member (1) to move along a first dimension; the transmission member (3) is also used to enable the plurality of side drill members (2) to move along a second dimension when the middle drill member (1) moves along the first dimension; The transmission member (3) is also used to form a discharge space between the middle drill member (1) and the side drill member (2); A plurality of intermediate drill pieces are provided on the transmission member (3); the intermediate drill pieces are used to form intermediate drilling areas in the discharge space; The transmission member (3) comprises a first hinge portion (32), a second hinge portion (33) and a connecting portion (34); The first hinged portion (32) is hinged to the middle drill piece (1), and the second hinged portion (33) is hinged to the side drill piece (2); the connecting portion (34) is used to connect the first hinged portion (32) and the second hinged portion (33); A plurality of transmission members (3) are provided, and each transmission member (3) is used to connect one of the edge drill members (2) with the middle drill member (1); The intermediate drill pieces are provided in plurality, and each of the connecting parts (34) is equipped with a plurality of the intermediate drill pieces; The middle drill piece (1) is provided with a rotating blade (8); the rotating blade (8) is directly or indirectly fixed to the middle drill piece (1); The multifunctional drill bit for geotechnical engineering further comprises a mounting housing (5), wherein the plurality of edge drill pieces (2) are mounted in the mounting housing (5); a rotating power piece (6) is arranged in the mounting housing (5), and the rotating power piece (6) is used to drive the edge drill pieces (2) and the middle drill piece (1) to rotate; The driving member (4) is arranged in the mounting housing (5), and the driving member (4) is rotatably connected to the middle drill member (1); the rotating blade (8) is arranged on the output end of the driving member (4) and is rotatably connected to the output end of the driving member (4); A plurality of guide rods (7) are also provided in the mounting housing (5), and the guide rods (7) are used to penetrate the abutment plate (51) and the edge drill piece (2), thereby guiding the movement of the edge drill piece (2) along the second dimension.

2. The multifunctional drill bit for geotechnical engineering according to claim 1, characterized in that: The plurality of edge drill pieces (2) are distributed in an array along the circumference of the middle drill piece (1); The second dimension is a direction away from the middle drill piece (1); The movement of the plurality of edge drill pieces (2) along the second dimension is that the plurality of edge drill pieces (2) move away from the middle drill piece (1) at the same time.

3. The multifunctional drill bit for geotechnical engineering according to claim 2, characterized in that: The driving member (4) is used to move the middle drill member (1) to a first position and a second position; The transmission member (3) is used to form an inclined first middle drilling surface in the middle drilling area between the middle drilling member (1) and the side drilling member (2) when the middle drilling member (1) is located at the first position; The transmission member (3) is used to form a horizontal second intermediate drilling surface in the intermediate drilling area between the intermediate drilling member (1) and the side drilling member (2) when the intermediate drilling member (1) is located at the second position.

4. The multifunctional drill bit for geotechnical engineering according to claim 3, characterized in that: The first intermediate drilling surface and the second intermediate drilling surface are both connected to the first drilling area and the second drilling area.

5. The multifunctional drill bit for geotechnical engineering according to claim 3, characterized in that: The transmission member (3) is further used to make the second drilling area close to the first drilling area when the middle drilling member (1) is located at the first position; The transmission member (3) is also used to move the second drilling area away from the first drilling area when the middle drilling member (1) is located at the first position.

6. The multifunctional drill bit for geotechnical engineering according to claim 1, characterized in that: The rotating blades (8) are provided in plurality and distributed in a linear array along the first dimension.

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