A rotary drill bit with replaceable tooth modules

Abstract

The utility model relates to the technical field of engineering machinery, and disclose a replaceable rotary drilling head of drill tooth module. The replaceable rotary drilling head of drill tooth module, including drill bit body, rectangular block and cutting tooth seat, the front side of rectangular block is embedded with the cutting tooth seat extending to its inside, the working end of drill bit body front side is opened with the rectangular arrangement distribution and the rectangular block adaptation's rectangular arrangement gap, the inner chamber rear wall of rectangular arrangement gap all are opened with a plurality of alignment holes, the inner chamber lateral wall of rectangular arrangement gap all are opened with rectangular hole, and the device has modularization replaceable design, installation position accurate consistency with quick dismounting and other advantages, when the cutting tooth seat wears, need to replace the drill bit or carry out professional welding maintenance, not only increase the construction cost, still lead to the equipment downtime extension, the welding technology is difficult to guarantee the installation angle and position accuracy of each cutting tooth seat consistent, influence the overall balance of drill bit and the drilling efficiency problem.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a rotary drilling bit with replaceable drill tooth modules. Background Technology

[0002] In the field of construction machinery, rotary drilling bits are the core components of foundation construction, and their performance directly affects construction efficiency and quality. Currently, the mainstream rotary drilling bits on the market generally use welding to fix the cutting tooth seat to the working end of the drill bit body.

[0003] However, when the cutting tooth holders wear out, the entire drill bit needs to be replaced or professional welding repairs need to be performed. This not only increases construction costs but also leads to longer equipment downtime. The welding process makes it difficult to ensure that the installation angle and position accuracy of each cutting tooth holder are consistent, affecting the overall balance of the drill bit and drilling efficiency.

[0004] In summary, a rotary drilling bit with replaceable drill bit modules is proposed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a rotary drilling bit with replaceable drill tooth modules. It features a modular and replaceable design, precise and consistent installation positions, and quick assembly and disassembly. This solves the problem that when the cutting tooth holders wear out, the entire drill bit needs to be replaced or professional welding repairs are required, which not only increases construction costs but also leads to prolonged equipment downtime. Furthermore, the welding process makes it difficult to ensure that the installation angle and position accuracy of each cutting tooth holder are consistent, affecting the overall balance of the drill bit and drilling efficiency.

[0007] (II) Technical Solution

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A rotary drilling bit with replaceable drill tooth module includes a drill bit body, a rectangular block and a cutting tooth seat. The front side of the rectangular block is embedded with a cutting tooth seat extending into it. The working end of the front side of the drill bit body is provided with rectangular mounting notches arranged in a ring array and adapted to the rectangular block. The rear wall of the inner cavity of the rectangular mounting notch is provided with a plurality of alignment holes. The side wall of the inner cavity of the rectangular mounting notch is provided with rectangular holes. The front and rear walls of the inner cavity of the rectangular holes are provided with mutually adapted spherical grooves.

[0009] The rectangular block has several ball joints that are all adapted to the alignment holes fixedly connected to its rear side. The rectangular block has an adjustment component extending to its opposite side inside. The rectangular block also has limiting components that are symmetrically distributed on the left and right sides and extend to its outer side inside. The opposite ends of the limiting components are kinetically connected to the adjustment components. The limiting components are adapted to the rectangular holes. The front and rear sides of the opposite end of the limiting components are provided with auxiliary components that are adapted to the spherical grooves.

[0010] The beneficial effects of this utility model are:

[0011] This rotary drill bit with replaceable drill bit modules aligns and inserts the ball head rod on the rear side of the rectangular block with the alignment hole to ensure accurate initial positioning of the rectangular block and the cutting tooth holder. At this time, the opposite side of the limiting component is aligned with the rectangular hole. By turning the adjusting component with a wrench, the limiting component is moved to the opposite side and inserted into the rectangular hole. When the limiting component is fully inserted into the rectangular hole, the auxiliary component pops into the spherical groove, making a "click" sound to indicate that the installation is in place. Install the remaining rectangular blocks in the same way to ensure that all rectangular blocks are evenly distributed in the rectangular mounting notch at the working end of the drill bit body, and that the installation angle and position accuracy of the cutting tooth holder are consistent. It has the advantages of modular and replaceable design, precise and consistent installation position, and quick disassembly and assembly.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the adjustment assembly includes a bolt rod, a drive disc, and an arc-shaped hole. The bolt rod extending to the opposite side is rotatably connected inside the rectangular block. The drive disc located inside the rectangular block is fixedly connected to the outside of the bolt rod. The surface of the drive disc has arc-shaped holes distributed in a centrally symmetrical manner.

[0014] Furthermore, the limiting component includes a limiting plate and a linkage column. The rectangular block has a limiting plate that is slidably connected to its interior, is symmetrically distributed on the left and right sides, and extends to its outer side. The limiting plate is adapted to the rectangular hole, and a linkage column extending into the arc-shaped hole is fixedly connected to the surface of the limiting plate at one end.

[0015] The beneficial effect of adopting the above-mentioned further solution is that by turning the bolt head rod with a wrench, the drive plate and the arc-shaped hole on its surface are rotated. Since the arc-shaped hole is movably connected to the linkage column, the rotation of the arc-shaped hole drives the limiting plate to move to the opposite or opposite side. When the limiting plate moves to the opposite side until the limiting plate is completely inserted into the rectangular hole, the installation of the rectangular block and the cutting tooth seat can be completed. Reversing the bolt head rod drives the drive plate to reverse, thereby driving the limiting plate to move to the opposite side until the limiting plate separates from the rectangular hole. The rectangular block can then be pulled out from the rectangular mounting notch, and a single cutting tooth seat can be replaced. This achieves the effect of modular and replaceable design and quick disassembly and assembly.

[0016] Furthermore, the auxiliary component includes a ball-head movable block and a spring. The front and rear sides of the opposite end of the limiting plate are provided with ball-head movable blocks that extend into the interior and are adapted to the spherical groove. The opposite side of the ball-head movable block is provided with a spring located inside the limiting plate.

[0017] The beneficial effect of adopting the above-mentioned further solution is that when the limiting plate is fully inserted into the rectangular hole, the ball head movable block, under the elastic force of the spring, springs back into the spherical groove, making a "click" sound to indicate that the installation is in place. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drill bit body structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the rectangular block structure of this utility model;

[0021] Figure 4 This is a top view of the rectangular block structure of this utility model;

[0022] Figure 5 This is a partial top sectional view of the rectangular block of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the assembly structure of this utility model.

[0025] In the diagram: 1. Drill bit body; 2. Rectangular block; 3. Cutting tooth holder; 4. Rectangular mounting notch; 5. Alignment hole; 6. Rectangular hole; 7. Spherical groove; 8. Ball head rod; 9. Adjustment assembly; 901. Bolt rod; 902. Drive disc; 903. Arc-shaped hole; 10. Limiting assembly; 101. Limiting plate; 102. Linkage column; 11. Auxiliary assembly; 111. Ball head movable block; 112. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the embodiments, by Figure 1-7The present invention provides a rotary drilling bit with replaceable drill bit modules. The present invention includes a drill bit body 1, a rectangular block 2 and a cutting tooth seat 3. The cutting tooth seat 3 extending into the front side of the rectangular block 2 is embedded therein. The working end of the front side of the drill bit body 1 has rectangular mounting notches 4 arranged in a ring array and adapted to the rectangular block 2. The rear wall of the inner cavity of the rectangular mounting notch 4 is provided with a plurality of alignment holes 5. The side wall of the inner cavity of the rectangular mounting notch 4 is provided with rectangular holes 6. The front and rear walls of the inner cavity of the rectangular holes 6 are provided with mutually adapted spherical grooves 7.

[0028] The rectangular block 2 is fixedly connected to a plurality of ball-head rods 8 that are adapted to the alignment holes 5. The rectangular block 2 is provided with an adjustment component 9 extending to its opposite side. The rectangular block 2 is provided with a limiting component 10 that is symmetrically distributed on the left and right sides and extends to its outer side. The opposite ends of the limiting components 10 are connected to the adjustment component 9. The limiting components 10 are adapted to the rectangular holes 6. The front and rear sides of the opposite end of the limiting components 10 are provided with auxiliary components 11 that are adapted to the spherical grooves 7.

[0029] The adjustment assembly 9 includes a bolt rod 901, a drive disc 902, and an arc-shaped hole 903. The bolt rod 901 extending to the opposite side is rotatably connected inside the rectangular block 2. The drive disc 902 located inside the rectangular block 2 is fixedly connected to the outside of the bolt rod 901. The surface of the drive disc 902 is provided with arc-shaped holes 903 that are centrally symmetrically distributed.

[0030] The limiting component 10 includes a limiting plate 101 and a linkage column 102. The rectangular block 2 is slidably connected to the limiting plate 101, which is symmetrically distributed on the left and right and extends to its outer side. The limiting plate 101 is adapted to the rectangular hole 6. The surface of the limiting plate 101 at one end is fixedly connected to the linkage column 102, which extends into the arc-shaped hole 903.

[0031] By turning the bolt rod 901 with a wrench, the drive plate 902 and its arc-shaped hole 903 on its surface are rotated. Since the arc-shaped hole 903 is movably connected to the linkage column 102, the rotation of the arc-shaped hole 903 drives the limiting plate 101 to move to the opposite or opposite side. When the limiting plate 101 moves to the opposite side until the limiting plate 101 is completely inserted into the rectangular hole 6, the installation of the rectangular block 2 and the cutting tooth seat 3 can be completed. Reversing the bolt rod 901 drives the drive plate 902 to reverse, which in turn drives the limiting plate 101 to move to the opposite side until the limiting plate 101 is separated from the rectangular hole 6. The rectangular block 2 can then be pulled out from the rectangular mounting notch 4, and a single cutting tooth seat 3 can be replaced. This achieves the effect of modular and replaceable design and quick disassembly and assembly.

[0032] The auxiliary component 11 includes a ball head movable block 111 and a spring 112. The front and rear sides of the opposite end of the limiting plate 101 are provided with ball head movable blocks 111 that extend into the interior and are adapted to the spherical groove 7. The opposite side of the ball head movable block 111 is provided with a spring 112 located inside the limiting plate 101.

[0033] When the limiting plate 101 is fully inserted into the rectangular hole 6, the ball head movable block 111, under the elastic force of the spring 112, springs back into the spherical groove 7, making a "click" sound to indicate that it is installed in place.

[0034] Step 1: Align the ball head rod 8 on the rear side of the rectangular block 2 with the alignment hole 5 and insert it to ensure that the rectangular block 2 and the cutting tooth seat 3 are initially positioned accurately. At this time, the opposite side of the limiting plate 101 is aligned with the rectangular hole 6 respectively.

[0035] Step 2: Turn the bolt rod 901 with a wrench, which will drive the drive plate 902 and the arc-shaped hole 903 on its surface to rotate. Since the arc-shaped hole 903 is movably connected to the linkage column 102, the rotation of the arc-shaped hole 903 will drive the limiting plate 101 to move to the opposite side until the limiting plate 101 is completely inserted into the rectangular hole 6.

[0036] Step 3: When the limiting plate 101 is fully inserted into the rectangular hole 6, the ball head movable block 111, under the elastic force of the spring 112, will spring back into the spherical groove 7, making a "click" sound to indicate that it is installed in place. Install the remaining rectangular blocks 2 in the same way to ensure that all rectangular blocks 2 are evenly distributed in the rectangular mounting notch 4 at the working end of the drill bit body 1, and that the installation angle and position accuracy of the cutting tooth seat 3 are consistent.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary drilling bit with replaceable drill bit modules, comprising a bit body (1), a rectangular block (2), and a cutting tooth holder (3), wherein the front side of the rectangular block (2) is fitted with a cutting tooth holder (3) extending into it, characterized in that: The working end of the drill bit body (1) is provided with rectangular mounting notches (4) arranged in a ring array and adapted to the rectangular block (2). The rear wall of the inner cavity of the rectangular mounting notch (4) is provided with several alignment holes (5). The side wall of the inner cavity of the rectangular mounting notch (4) is provided with rectangular holes (6). The front and rear walls of the inner cavity of the rectangular holes (6) are provided with mutually adapted spherical grooves (7). The rectangular block (2) is fixedly connected to a number of ball-head rods (8) that are all adapted to the alignment holes (5). The rectangular block (2) is provided with an adjustment component (9) extending to its opposite side. The rectangular block (2) is provided with a limiting component (10) that is symmetrically distributed on the left and right sides and extends to its outer side. The opposite end of the limiting component (10) is connected to the adjustment component (9) in a transmission manner. The limiting component (10) is adapted to the rectangular hole (6). The front and rear sides of the opposite end of the limiting component (10) are provided with auxiliary components (11) that are adapted to the spherical groove (7).

2. The rotary drilling bit with replaceable drill bit module according to claim 1, characterized in that: The adjustment assembly (9) includes a bolt rod (901), a drive disc (902), and an arc-shaped hole (903). The bolt rod (901) extending to the opposite side is rotatably connected inside the rectangular block (2). The drive disc (902) located inside the rectangular block (2) is fixedly connected to the outside of the bolt rod (901). The surface of the drive disc (902) is provided with arc-shaped holes (903) that are centrally symmetrically distributed.

3. A rotary drilling bit with replaceable drill bit module according to claim 2, characterized in that: The limiting component (10) includes a limiting plate (101) and a linkage column (102). The rectangular block (2) is slidably connected to the limiting plate (101) which is symmetrically distributed on the left and right and extends to its outer side. The limiting plate (101) is adapted to the rectangular hole (6). The surface of the limiting plate (101) at one end is fixedly connected to the linkage column (102) which extends into the arc-shaped hole (903).

4. A rotary drilling bit with replaceable drill bit module according to claim 3, characterized in that: The auxiliary component (11) includes a ball head movable block (111) and a spring (112). The front and rear sides of the opposite end of the limiting plate (101) are provided with ball head movable blocks (111) that extend into the interior and are adapted to the spherical groove (7). The opposite side of the ball head movable block (111) is provided with a spring (112) located inside the limiting plate (101).

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