Lightweight special drill bit for drilling large hole in small equipment

Abstract

The utility model relates to a lightweight special drill bit for drilling large holes in small equipment, which comprises a barrel with an opening at the bottom and a toothed plate structure mounted at the opening at the bottom of the barrel, the toothed plate structure comprises two straight toothed plates, two arc-shaped toothed plates and a plurality of cutting teeth, and the two straight toothed plates and the two arc-shaped toothed plates are arranged at the bottom of the barrel in a central symmetry manner. Wherein the two straight toothed plates are arranged in the radial direction of the bottom of the barrel, the two arc-shaped toothed plates are arranged along the edge of the barrel, the ends of the arc-shaped toothed plates are connected with the outer ends of the corresponding straight toothed plates, a plurality of mounting notches are formed in the bottoms of the two straight toothed plates and the bottoms of the two arc-shaped toothed plates at intervals, and the cutting teeth are obliquely arranged in the mounting notches in a one-to-one correspondence mode. The inclination directions of the cutting teeth on the two straight toothed plates are opposite, and the lower ends of the cutting teeth on the two arc-shaped toothed plates incline outwards. The rotary drilling device is high in drilling efficiency and capable of meeting rotary drilling requirements in complex environments.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a lightweight special drill bit for drilling large holes with small equipment. Background Art

[0002] Drilling is often required in infrastructure construction projects. With advancements in technology, automation, and digitalization, rotary drilling rigs are commonly used to perform these tasks. Rotary drilling rigs are comprehensive drilling rigs that can be used with a variety of drilling tools to meet the drilling needs of various strata. Consequently, rotary drilling rigs are widely used. However, the operating conditions on site are complex, affected by factors such as site area and height restrictions.

[0003] In existing technology, the accessibility of large rotary drilling rigs is limited, and small rotary drilling rigs cannot carry large-diameter drilling tools, resulting in low drilling efficiency. Therefore, we restructured the structure and redesigned a small rotary drilling rig that can drill large-diameter holes. Utility Model Content

[0004] In order to solve the problems in the background technology, the utility model proposes a lightweight special drill bit for drilling large holes with small equipment. The utility model has high drilling efficiency and can meet the requirements of rotary drilling in complex environments.

[0005] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a through-hole, and the two foot pieces comprise a through-hole, a screw bolt, and a nut.

[0006] Furthermore, the tooth plate structure also includes a central mounting block and at least two excavation teeth, the central mounting block is arranged at the bottom of the cylinder, the mutually adjacent ends of the two straight tooth plates are connected to the side surfaces of the central mounting block, at least two of the excavation teeth are obliquely welded to the bottom of the central mounting block, the inclination directions of at least two of the excavation teeth are opposite and consistent with the inclination direction of the cutting teeth on the straight tooth plate on the same side, and the lower end heights of at least two of the excavation teeth are lower than the lower end height of the cutting teeth.

[0007] Furthermore, the cylinder body includes an outer cylinder wall and a mounting top seat, the mounting top seat is arranged at the top of the outer cylinder wall, and the bottom of the outer cylinder wall is provided with two mutually symmetrical fan-shaped hollow areas, and the two straight tooth plates and the two arc-shaped tooth plates are each separated by the two fan-shaped hollow areas and arranged at the bottom of the outer cylinder wall.

[0008] Furthermore, the cylinder body also includes a hollow cone arranged inside the outer cylinder wall, the hollow cone body is a slope structure that tapers from bottom to top, and the bottom of the hollow cone body is integrally formed on the inner bottom wall of the outer cylinder wall.

[0009] Furthermore, a plurality of through holes are formed through the side surface of the outer cylinder wall.

[0010] Furthermore, the two straight tooth plates and the two arc-shaped tooth plates are integrally formed.

[0011] Furthermore, the pick is made of alloy structural steel.

[0012] The beneficial effects of the present invention are as follows: the present invention arranges two straight tooth plates, two arc-shaped tooth plates and a plurality of cutting teeth at the bottom of the cylinder to form a centrally symmetrical fan-shaped structure. The rotary drilling rig feeds soil toward the middle along the cutting teeth in the soil layer, and the soil enters the middle of the cylinder at the bottom opening of the cylinder, avoiding entering toward one side of the cylinder, making soil feeding smoother, improving drilling efficiency, and meeting drilling requirements in complex working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 It is a bottom view of the utility model;

[0017] Figure 4 It is a cross-sectional view of the present invention.

[0018] 1. Cylinder body; 2. Tooth plate structure; 3. Straight tooth plate; 4. Arc tooth plate; 5. Cutting teeth; 6. Center mounting block; 7. Excavation teeth; 8. Outer cylinder wall; 9. Mounting top seat; 10. Fan-shaped hollow area; 11. Hollow cone; 12. Through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The utility model arranges two straight tooth plates 3, two arc-shaped tooth plates 4 and a plurality of cutting teeth 5 at the bottom of the cylinder 1 to form a centrally symmetrical fan-shaped structure. The rotary drilling rig feeds soil toward the middle along the cutting teeth 5 in the soil layer, and the soil enters the middle part of the cylinder 1 at the bottom opening of the cylinder 1, avoiding entering toward one side of the cylinder 1, making soil feeding smoother, improving drilling efficiency, and meeting drilling requirements in complex working environments.

[0021] Specifically, such as Figures 1 to 4 The tool is provided with a plurality of tooth plates 3 and a plurality of tooth plates 5, the tooth plates 3 and the plurality of tooth plates 5 are connected to each other at the bottom of the tool body 1, and the plurality of tooth plates 5 are connected to each other at the bottom of the tool body 1.

[0022] Furthermore, the tooth plate structure 2 also includes a central mounting block 6 and at least two excavation teeth 7. The central mounting block 6 is arranged at the bottom of the cylinder 1, and the ends of the two straight tooth plates 3 that are close to each other are connected to the side of the central mounting block 6. At least two of the excavation teeth 7 are welded obliquely to the bottom of the central mounting block 6. The inclination directions of at least two of the excavation teeth 7 are opposite and consistent with the inclination direction of the cutting teeth 5 on the straight tooth plate 3 on the same side. The lower end heights of at least two of the excavation teeth 7 are lower than the lower end height of the cutting teeth 5.

[0023] Furthermore, the cylinder body 1 includes an outer cylinder wall 8 and a mounting top seat 9, the mounting top seat 9 is arranged at the top of the outer cylinder wall 8, and two mutually symmetrical fan-shaped hollow areas 10 are opened at the bottom of the outer cylinder wall 8, and the two straight tooth plates 3 and the two arc-shaped tooth plates 4 are each separated by the two fan-shaped hollow areas 10 and arranged at the bottom of the outer cylinder wall 8.

[0024] Furthermore, the cylinder 1 further includes a hollow cone 11 disposed within the outer cylinder wall 8. The hollow cone 11 has a tapered structure that tapers from bottom to top, with the bottom of the hollow cone 11 integrally formed on the inner bottom wall of the outer cylinder wall 8. The provision of the hollow cone 11 not only reduces the weight of the device, meeting lightweight design requirements and lowering power consumption, but also facilitates the unloading of soil and material entering the cylinder 1.

[0025] Furthermore, a plurality of through holes 12 are formed through the side surface of the outer cylinder wall 8 .

[0026] Furthermore, the two straight tooth plates 3 and the two arc-shaped tooth plates 4 are all formed in one piece.

[0027] Furthermore, the pick 5 is made of alloy structural steel.

[0028] When the present invention is in use, two straight tooth plates 3, two arc-shaped tooth plates 4 and a plurality of cutting teeth 5 are arranged at the bottom of the cylinder 1 to form a centrally symmetrical fan-shaped structure. The rotary drilling rig feeds soil toward the middle of the soil layer along the cutting teeth 5, and the soil enters the middle of the cylinder 1 at the bottom opening of the cylinder 1, avoiding entering toward one side of the cylinder 1. By arranging a central mounting seat and excavation teeth 7 at the bottom of the cylinder 1, during the excavation process of the device, the center is drilled first and then the holes on both sides, which makes the drilling smoother, improves the drilling efficiency, and can meet the drilling requirements in complex working environments.

[0029] 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, improvements, etc. 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 lightweight special drill bit for drilling large holes in small equipment, comprising a cylinder (1) with an opening at the bottom and a tooth plate structure (2) installed at the bottom opening of the cylinder (1), characterized in that: The tooth plate structure (2) comprises two straight tooth plates (3), two arc-shaped tooth plates (4) and a plurality of cutting teeth (5), wherein the two straight tooth plates (3) and the two arc-shaped tooth plates (4) are centrally symmetrically arranged at the bottom of the cylinder (1), wherein the two straight tooth plates (3) are arranged along the radial direction of the bottom of the cylinder (1), and the two arc-shaped tooth plates (4) are arranged along the edge of the cylinder (1), and the ends of the arc-shaped tooth plates (4) are connected to the outer ends of the corresponding straight tooth plates (3), and the bottoms of the two straight tooth plates (3) and the two arc-shaped tooth plates (4) are each provided with a plurality of mounting notches at intervals, and the plurality of cutting teeth (5) are arranged in a tilted manner in the plurality of mounting notches in a one-to-one correspondence, the tilt directions of the cutting teeth (5) on the two straight tooth plates (3) are opposite, and the lower ends of the cutting teeth (5) on the two arc-shaped tooth plates (4) are tilted outward.

2. A lightweight special drill bit for drilling large holes in small equipment according to claim 1, characterized in that: The tooth plate structure (2) further comprises a central mounting block (6) and at least two excavation teeth (7), wherein the central mounting block (6) is arranged at the bottom of the cylinder (1), and the mutually adjacent ends of the two straight tooth plates (3) are connected to the side of the central mounting block (6), and at least two excavation teeth (7) are welded obliquely to the bottom of the central mounting block (6), and the inclination directions of at least two excavation teeth (7) are opposite and consistent with the inclination direction of the cutting teeth (5) on the straight tooth plate (3) on the same side, and the lower end heights of at least two excavation teeth (7) are lower than the lower end height of the cutting teeth (5).

3. The lightweight special drill bit for drilling large holes in small equipment according to claim 1, characterized in that: The cylinder (1) comprises an outer cylinder wall (8) and a mounting top seat (9), wherein the mounting top seat (9) is arranged on the top of the outer cylinder wall (8), and the bottom of the outer cylinder wall (8) is provided with two mutually symmetrical fan-shaped hollow areas (10), and the two straight tooth plates (3) and the two arc-shaped tooth plates (4) are arranged at the bottom of the outer cylinder wall (8) with the two fan-shaped hollow areas (10) spaced apart.

4. A lightweight special drill bit for drilling large holes in small equipment according to claim 3, characterized in that: The cylinder (1) further comprises a hollow cone (11) arranged inside the outer cylinder wall (8); the hollow cone (11) is a sloped structure that tapers from bottom to top; the bottom of the hollow cone (11) is integrally formed on the inner bottom wall of the outer cylinder wall (8).

5. The lightweight special drill bit for drilling large holes in small equipment according to claim 3, characterized in that: A plurality of through holes (12) are provided through the side surface of the outer cylinder wall (8).

6. The lightweight special drill bit for drilling large holes in small equipment according to claim 1, characterized in that: The two straight tooth plates (3) and the two arc-shaped tooth plates (4) are all formed in one piece.

7. The lightweight special drill bit for drilling large holes in small equipment according to claim 1, characterized in that: The pick (5) is made of alloy structural steel.

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