Super-hard rock stratum drill bit of cat-claw structure
By designing a multi-step structure and center positioning and reaming technology of cemented carbide teeth on the cat claw drill bit, the inclination and fracture problems during drilling of ultra-hard rock layers are solved, and a stable and efficient drilling effect is achieved.
Patent Information
- Application Number
- CN202421288306.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-06
AI Technical Summary
Existing cat claw drills can easily cause inclination and drilling pipe breaks when drilling holes in superhard rock layers, and cannot drill stably and efficiently.
A multi-order structure cat claw superhard rock drill bit is designed, including the body, the first hemispherical block, the second hemispherical block and the fixed block. The central positioning and multi-order reaming are formed through several cemented carbide teeth to avoid drilling. Tilt and reduce shear effects.
Stable and efficient drilling on superhard rock layers is achieved, which avoids drilling inclination and drilling pipe breakage, and maintains efficient drilling capabilities on ordinary rock layers.
Smart Images
Figure CN222333699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rock drilling bits, in particular to a superhard rock formation drill bit with a cat's claw structure. Background Art
[0002] The current cat's claw drill bits are generally of a single-stage structure, which can efficiently drill holes in ordinary rock formations. However, when encountering super-hard rock formations during the drilling process, since the ball teeth on the existing cat's claw drill bits are distributed in a single stage, it is easy to cause tilting when drilling in the super-hard rock formation, causing the drill hole to deviate from the predetermined position, which not only causes serious wear of the drill bit, but also creates the risk of fracture due to shearing of the drill rod. Therefore, there is an urgent need for a super-hard rock formation drill bit with a cat's claw structure that can perform stable and efficient drilling in super-hard rock formations. Utility Model Content
[0003] The utility model aims to provide a superhard rock formation drill bit with a cat's claw structure to solve the problems existing in the above-mentioned prior art.
[0004] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides a superhard rock drill bit with a cat's claw structure, comprising a main body detachably connected to and communicated with a drill rod, a first hemispherical block fixedly connected to the center position of one end of the main body away from the drill rod, a second hemispherical block fixedly connected to the center position of one end of the first hemispherical block away from the main body, a fixed block fixedly connected to the center position of one end of the second hemispherical block away from the first hemispherical block, and a plurality of fourth carbide teeth fixedly connected to one end of the fixed block away from the second hemispherical block.
[0005] Preferably, a plurality of second grooves are formed at equal intervals on the outer wall of the fixing block, the second grooves are connected with second through holes, and the second through holes are formed on the second hemispherical block.
[0006] Preferably, the second through hole passes through the first hemispherical block and is connected with the inner cavity of the body.
[0007] Preferably, the top surface of the fixed block is arc-shaped and the plurality of fourth carbide teeth are evenly distributed on the arc surface of the fixed block, the top surfaces of the plurality of fourth carbide teeth are flush, and any of the fourth carbide teeth is arranged at the center of the top surface of the fixed block.
[0008] Preferably, a plurality of first grooves are formed on the outer wall of the body at equal intervals, a first through hole is formed in the first groove, and the first through hole is communicated with the inner cavity of the body.
[0009] Preferably, the top surface of the main body is an arc surface, and a plurality of first carbide teeth are fixedly connected to the arc surface of the main body at equal intervals. The first carbide teeth are arranged around the first hemispherical block and the top ends of the first carbide teeth are inclined away from the first hemispherical block.
[0010] Preferably, a plurality of second carbide teeth are fixedly connected to the top surface of the first hemispherical block at equal intervals, the second carbide teeth are arranged around the second hemispherical block and the top ends of the second carbide teeth are inclined away from the second hemispherical block.
[0011] Preferably, a plurality of third carbide teeth are fixedly connected to the top surface of the second hemispherical block at equal intervals, the third carbide teeth are arranged around the fixed block and the top ends of the third carbide teeth are inclined away from the fixed block.
[0012] The utility model discloses the following technical effects:
[0013] The utility model forms a multi-stage structure through the main body, the first hemispherical block, the second hemispherical block and the fixed block, and performs center positioning through a plurality of fourth carbide teeth on the fixed block. When the fixed block contacts the rock formation and rotates to drill into the rock formation, it can play a role of positioning and guiding, and expands the hole through multiple stages in sequence, which can effectively avoid tilting during drilling and avoid fracture of the drill rod due to shearing. The utility model can not only drill holes in ordinary rock formations through the multi-stage structure, but also can stably and efficiently drill holes in super-hard rock formations. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a side view of the structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the top view of the structure of the utility model body;
[0018] Figure 4 This is a schematic diagram of the top view structure of the fixing block of the utility model;
[0019] Among them, 1, main body; 2, first hemispherical block; 3, second hemispherical block; 4, fixed block; 11, first groove; 12, first through hole; 13, first carbide tooth; 21, second carbide tooth; 31, third carbide tooth; 41, fourth carbide tooth; 42, second groove; 43, second through hole. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0022] Reference Figure 1-Figure 4 The utility model discloses a superhard rock formation drill bit with a cat's claw structure, comprising a main body 1 which is detachably connected and communicated with a drill rod, a first hemispherical block 2 is fixedly connected to the center position of one end of the main body 1 away from the drill rod, a second hemispherical block 3 is fixedly connected to the center position of one end of the first hemispherical block 2 away from the main body 1, a fixed block 4 is fixedly connected to the center position of one end of the second hemispherical block 3 away from the first hemispherical block 2, and a plurality of fourth carbide teeth 41 are fixedly connected to one end of the fixed block 4 away from the second hemispherical block 3.
[0023] The utility model forms a multi-stage structure through the main body 1, the first hemispherical block 2, the second hemispherical block 3, and the fixed block 4, and performs center positioning through a plurality of fourth carbide teeth 41 on the fixed block 4. When the fixed block 4 contacts the rock formation and rotates to drill into the rock formation, it can play a role in positioning and guiding, and expand the hole through multiple stages in sequence, which can effectively avoid tilting during drilling and avoid fracture of the drill rod due to shearing. The utility model can not only drill holes in ordinary rock formations through the multi-stage structure, but also can stably and efficiently drill holes in super-hard rock formations.
[0024] According to a further optimized solution, a plurality of second grooves 42 are formed at equal intervals on the outer wall of the fixing block 4 , and the second grooves 42 are connected to second through holes 43 , and the second through holes 43 are formed on the second hemispherical block 3 .
[0025] According to a further optimized solution, the second through hole 43 passes through the first hemispherical block 2 and is connected with the inner cavity of the main body 1 .
[0026] A further optimized solution is that the top surface of the fixed block 4 is arc-shaped and a plurality of fourth carbide teeth 41 are evenly distributed on the arc surface of the fixed block 4 , the top surfaces of the plurality of fourth carbide teeth 41 are flush, and any fourth carbide tooth 41 is arranged at the center position of the top surface of the fixed block 4 .
[0027] The drilling position is determined by a fourth carbide tooth 41 disposed at the center of the arc surface of the fixing block 4, so that the fixing block 4 can drill holes according to the predetermined position.
[0028] According to a further optimization scheme, a plurality of first grooves 11 are formed at equal intervals on the outer wall of the main body 1 , and first through holes 12 are formed in the first grooves 11 . The first through holes 12 are communicated with the inner cavity of the main body 1 .
[0029] A further optimized solution is that the top surface of the main body 1 is an arc surface, and a plurality of first carbide teeth 13 are fixedly connected to the arc surface of the main body 1 at equal intervals. The first carbide teeth 13 are arranged around the first hemispherical block 2 and the top end of the first carbide teeth 13 is inclined away from the first hemispherical block 2.
[0030] According to a further optimization scheme, a plurality of second carbide teeth 21 are fixedly connected to the top surface of the first hemispherical block 2 at equal intervals, and the second carbide teeth 21 are arranged around the second hemispherical block 3 and the top ends of the second carbide teeth 21 are inclined away from the second hemispherical block 3 .
[0031] According to a further optimization scheme, a plurality of third carbide teeth 31 are fixedly connected to the top surface of the second hemispherical block 3 at equal intervals. The third carbide teeth 31 are arranged around the fixed block 4 and the top ends of the third carbide teeth 31 are inclined away from the fixed block 4 .
[0032] Working process: firstly, positioning is performed through the fixed block 4 and preliminary drilling is performed, then the first hole expansion is performed through the second hemispherical block 3, and then the second hole expansion is performed through the first hemispherical block 2, and finally the final hole expansion is performed through the main body 1, so that the drilling process is to expand the small hole in sequence to a hole that is adapted to the outer diameter of the main body 1; the multi-stage structure formed by the main body 1, the first hemispherical block 2, the second hemispherical block 3, and the fixed block 4, and multi-stage sequential drilling can effectively avoid tilting during drilling and avoid the drill rod from being broken due to shearing; the utility model can not only drill holes in ordinary rock formations through the multi-stage structure, but also can stably and efficiently drill holes in super-hard rock formations.
[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0034] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A superhard rock drill bit with a cat's claw structure, characterized in that: The invention comprises a body (1) which is detachably connected to and communicates with a drill rod, wherein a first hemispherical block (2) is fixedly connected to the center position of one end of the body (1) away from the drill rod, a second hemispherical block (3) is fixedly connected to the center position of one end of the first hemispherical block (2) away from the body (1), a fixed block (4) is fixedly connected to the center position of one end of the second hemispherical block (3) away from the first hemispherical block (2), and a plurality of fourth carbide teeth (41) are fixedly connected to the end of the fixed block (4) away from the second hemispherical block (3).
2. The superhard rock drill bit with a cat's claw structure according to claim 1, characterized in that: A plurality of second grooves (42) are provided at equal intervals on the outer wall of the fixed block (4); the second grooves (42) are connected to second through holes (43); and the second through holes (43) are provided on the second hemispherical block (3).
3. The superhard rock drill bit with cat's claw structure according to claim 2, characterized in that: The second through hole (43) passes through the first hemispherical block (2) and is in communication with the inner cavity of the body (1).
4. The cat's claw structure superhard rock drill bit according to claim 1, characterized in that: The top surface of the fixing block (4) is arc-shaped and a plurality of the fourth hard alloy teeth (41) are evenly distributed on the arc surface of the fixing block (4); the top surfaces of the plurality of the fourth hard alloy teeth (41) are arranged flush with each other, and any one of the fourth hard alloy teeth (41) is arranged at the center position of the top surface of the fixing block (4).
5. The cat's claw structure superhard rock drill bit according to claim 1, characterized in that: A plurality of first grooves (11) are formed at equal intervals on the outer wall of the body (1), a first through hole (12) is formed in the first groove (11), and the first through hole (12) is connected to the inner cavity of the body (1).
6. The cat's claw structure superhard rock drill bit according to claim 1, characterized in that: The top surface of the body (1) is an arc surface, and a plurality of first carbide teeth (13) are fixedly connected to the arc surface of the body (1) at equal intervals. The first carbide teeth (13) are arranged around the first hemispherical block (2), and the top ends of the first carbide teeth (13) are arranged obliquely away from the first hemispherical block (2).
7. The cat's claw structure superhard rock drill bit according to claim 1, characterized in that: A plurality of second hard alloy teeth (21) are fixedly connected to the top surface of the first hemispherical block (2) at equal intervals, and the second hard alloy teeth (21) are arranged around the second hemispherical block (3) and the top ends of the second hard alloy teeth (21) are arranged obliquely away from the second hemispherical block (3).
8. The cat's claw structure superhard rock drill bit according to claim 1, characterized in that: A plurality of third hard alloy teeth (31) are fixedly connected to the top surface of the second hemispherical block (3) at equal intervals, and the third hard alloy teeth (31) are arranged around the fixed block (4) and the top ends of the third hard alloy teeth (31) are arranged obliquely away from the fixed block (4).