A composite sealed roller cone bit with a protective cover
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CANGZHOU GREAT DRILL
- Filing Date
- 2025-07-30
- Publication Date
- 2026-08-07
AI Technical Summary
[0005]针对现有技术的不足,本实用新型提供了一种带有防护罩的复合密封牙轮钻头,解决了传统的牙轮钻头大多缺乏防护装置,这些碎屑和粉尘不仅会四处飞溅,对周围的设备造成磨损和损坏,影响设备的使用寿命的问题
[0013] This invention provides a composite sealed roller cone drill bit with a protective cover. It has the following beneficial effects:
Smart Images

Figure CN224606364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geological drilling technology, specifically a composite sealed roller cone drill bit with a protective cover. Background Technology
[0002] In fields such as geological drilling and mining, roller cone drill bits are important drilling tools. Their working environment is often quite harsh. During the drilling process, the high-speed rotation of the roller cone drill bit comes into contact with hard media such as rocks, which generates a large amount of debris and dust.
[0003] Traditional roller cone drill bits mostly lack protective devices. These chips and dust not only fly everywhere, causing wear and damage to surrounding equipment and affecting its service life, but also pollute the working environment and pose a threat to the health of operators. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a composite sealed roller cone drill bit with a protective cover, which solves the problem that most traditional roller cone drill bits lack protective devices, causing debris and dust to fly everywhere, resulting in wear and damage to surrounding equipment and affecting its service life.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: A composite sealed roller cone drill bit with a protective cover, comprising: a roller cone drill bit body, and an integrated assembly. The outer wall of the integrated assembly is rotatably connected to the outer wall of the roller cone drill bit body. The integrated assembly includes a limiting component, the outer wall of which is rotatably connected to the outer wall of the roller cone drill bit body. The limiting component is used to adjust the position of the integrated assembly to prevent interference with the normal operation of the roller cone drill bit body. A protective component is snapped onto the outer wall of the limiting component. The protective assembly includes a main frame, the outer wall of which is connected to a secondary frame via a pin, and the outer wall of the pin is fixedly connected to the outer wall of the secondary frame. Transparent acrylic plates are fixedly connected to the outer walls of both the main frame and the secondary frame, and the transparent acrylic plates are arranged in a circular array along the central axis of the roller cone drill bit body. Semicircular blocks are fixedly connected to the outer walls of both the main frame and the secondary frame, and positioning sleeves are fitted onto the outer walls of the semicircular blocks.
[0008] Preferably, a magnetic block is fixedly connected to the top of the semicircular block, the outer wall of the pin is inserted into the inner wall of the main frame, a slot corresponding to the pin is opened in the wall of the main frame, a sleeve is fixedly connected to the outer wall of the main frame, and a post is fixedly connected to the outer wall of the sub-frame.
[0009] Preferably, the outer wall of the insertion post is inserted into the inner wall of the sleeve, the top of the magnetic block is magnetically attracted to the inner wall of the positioning sleeve, and the positioning sleeve is made of a metal material that can be attracted by the magnetic block.
[0010] Preferably, the limiting component includes a fixed ring, with limiting rings fixedly connected to the outer walls on both sides of the fixed ring, and rolling balls rolledly connected to the inner wall of the fixed ring, and the rolling balls arranged in a circular array along the central axis of the fixed ring.
[0011] Preferably, the outer wall of the ball is in rolling connection with the outer wall of the roller cone drill bit body, the outer wall of the fixing ring is engaged with the outer wall of the main frame, and the outer wall of the fixing ring is engaged with the outer wall of the sub-frame.
[0012] (III) Beneficial Effects
[0013] This invention provides a composite sealed roller cone drill bit with a protective cover. It has the following beneficial effects:
[0014] (I) This composite sealed roller cone drill bit with a protective cover has a main frame and a secondary frame that are securely connected by a pin, a post and a sleeve. Combined with the magnetic attraction of the magnetic block on the semi-circular block and the positioning sleeve, a double-reinforced structure is formed to ensure that the protective components do not loosen or fall off when the roller cone drill bit is running at high speed and vibrating violently, thus improving the impact resistance of the protective structure. This plug-in design also gives the protective components flexible disassembly and assembly characteristics, which is convenient for later maintenance operations.
[0015] (II) This composite sealed roller cone drill bit with a protective cover, by setting transparent acrylic plates arranged in a circular array along the central axis of the drill bit body, forms a complete protective barrier that can block the debris and dust generated during drilling, protecting the surrounding environment and equipment safety; and due to the transparency of the acrylic plates, it does not affect the operator's real-time observation of the working status of the roller cone drill bit, making it easy to detect and deal with abnormal situations in a timely manner, thus taking into account both protection and observability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the integrated component of this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the protective component of this utility model;
[0019] Figure 4 This is a schematic diagram of the structure at point A of this utility model;
[0020] Figure 5 This is a schematic diagram of the limiting component of this utility model.
[0021] In the diagram: 1. Roller cone drill bit body; 2. Integrated assembly; 3. Protective assembly; 4. Limiting assembly; 31. Transparent acrylic plate; 32. Main frame; 33. Sub-frame; 34. Pin; 35. Sleeve; 36. Magnetic block; 37. Semicircular block; 38. Insert post; 39. Positioning sleeve; 41. Fixing ring; 42. Limiting ring; 43. Ball bearing. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1-5 This utility model provides a technical solution: a composite sealed roller cone drill bit with a protective cover, comprising: a roller cone drill bit body 1, and an integrated component 2, the outer wall of the integrated component 2 being rolledly connected to the outer wall of the roller cone drill bit body 1, the integrated component 2 including a limiting component 4, the outer wall of the limiting component 4 being rolledly connected to the outer wall of the roller cone drill bit body 1, and a protective component 3 being snapped onto the outer wall of the limiting component 4; the protective component 3 includes a main frame 32, the outer wall of the main frame 32 being inserted into a secondary frame 33 via a pin 34, and the outer wall of the pin 34 being fixedly connected to the outer wall of the secondary frame 33, both the outer walls of the main frame 32 and the secondary frame 33 being fixedly connected to a transparent acrylic plate 31, and the transparent acrylic plates 31 being arranged in a circular array along the central axis of the roller cone drill bit body 1, both the outer walls of the main frame 32 and the secondary frame 33 being fixedly connected to a semi-circular block 37, and a positioning sleeve 39 being fitted onto the outer wall of the semi-circular block 37.
[0024] A magnetic block 36 is fixedly connected to the top of the semicircular block 37. The outer wall of the pin 34 is inserted into the inner wall of the main frame 32. A sleeve 35 is fixedly connected to the outer wall of the main frame 32. A post 38 is fixedly connected to the outer wall of the secondary frame 33. The outer wall of the post 38 is inserted into the inner wall of the sleeve 35. The top of the magnetic block 36 is magnetically attracted to the inner wall of the positioning sleeve 39.
[0025] The limiting component 4 includes a fixed ring 41, with limiting rings 42 fixedly connected to the outer walls on both sides of the fixed ring 41. The inner wall of the fixed ring 41 is rolled with balls 43, and the balls 43 are arranged in a circular array along the central axis of the fixed ring 41. The outer wall of the balls 43 is rolledly connected to the outer wall of the roller cone drill bit body 1. The outer wall of the fixed ring 41 is engaged with the outer wall of the main frame 32 and the outer wall of the secondary frame 33.
[0026] During operation, the components of this composite sealed roller cone drill bit with a protective cover work together to achieve normal drilling operations for the drill bit body 1, while the protective cover provides effective protection.
[0027] In terms of overall structure, the integrated component 2 is rolled to the outer wall of the roller cone drill bit body 1, providing a stable foundation for the installation and operation of the protective component 3. The limiting component 4 in the integrated component 2 plays a key role in limiting and supporting. The limiting rings 42 on both sides of its fixing ring 41 can constrain the position of the protective component 3 and prevent excessive displacement during operation. The inner wall of the fixing ring 41 is rolled to a ball bearing 43, and the outer wall of the ball bearing 43 is rolled to the outer wall of the roller cone drill bit body 1. This design not only ensures that the roller cone drill bit body 1 can rotate smoothly for drilling operations, but also reduces the friction between the fixing ring 41 and the roller cone drill bit body 1, making the relative movement of the two smoother.
[0028] As the core protective structure, the protective component 3 has a main frame 32 and a secondary frame 33 connected by a pin 34. The outer wall of the pin 34 is fixedly connected to the secondary frame 33. At the same time, the insertion of the insert 38 and the sleeve 35 further enhances the stability of the connection between the main frame 32 and the secondary frame 33. The outer walls of both the main frame 32 and the secondary frame 33 are fixedly connected with transparent acrylic plates 31, which are arranged in a ring array along the central axis of the roller cone drill bit body 1. Without affecting the observation of the working status of the roller cone drill bit body 1, a complete protective barrier is formed, which can effectively block the impact of debris, dust and other materials generated during drilling on the surrounding environment and equipment.
[0029] Both the main frame 32 and the secondary frame 33 have semi-circular blocks 37 fixedly connected to their outer walls. A magnetic block 36 is fixedly connected to the top of the semi-circular block 37. A positioning sleeve 39 is fitted on the outer wall of the semi-circular block 37. The top of the magnetic block 36 is magnetically attracted to the inner wall of the positioning sleeve 39, which further strengthens the connection between the main frame 32 and the secondary frame 33. This ensures that the protective component 3 will not easily loosen or fall off in the working environment of high-speed operation and severe vibration of the roller cone drill bit. The fixing ring 41 of the limiting component 4 is engaged with the outer walls of the main frame 32 and the secondary frame 33, so that the protective component 3 can stably follow the movement of the roller cone drill bit body 1, ensuring the continuity and reliability of the protective effect.
[0030] When it is necessary to inspect, maintain or replace the roller cone drill bit body 1, the magnetic attraction between the positioning sleeve 39 and the magnetic block 36 can be released by pulling out the positioning sleeve 39, and then the pin 34 can be pulled out to separate the main frame 32 and the secondary frame 33. The protective cover can be opened quickly and easily. The operation is simple and efficient and does not affect the normal maintenance of the equipment.
[0031] 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.
[0032] 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 composite sealed roller cone drill bit with a protective cover, comprising: a roller cone drill bit body (1), characterized in that, It also includes: an integrated component (2), the outer wall of which is rolledly connected to the outer wall of the roller cone drill body (1), the integrated component (2) includes a limiting component (4), the outer wall of which is rolledly connected to the outer wall of the roller cone drill body (1), and a protective component (3) is snapped onto the outer wall of the limiting component (4). The protective component (3) includes a main frame (32), and a secondary frame (33) is inserted into the outer wall of the main frame (32) through a pin (34). The outer wall of the pin (34) is fixedly connected to the outer wall of the secondary frame (33). A transparent acrylic plate (31) is fixedly connected to the outer walls of both the main frame (32) and the secondary frame (33). The transparent acrylic plates (31) are arranged in a circular array along the central axis of the roller cone drill bit body (1). A semi-circular block (37) is fixedly connected to the outer walls of both the main frame (32) and the secondary frame (33). A positioning sleeve (39) is fitted onto the outer wall of the semi-circular block (37).
2. The composite sealed roller cone drill bit with a protective cover according to claim 1, characterized in that: A magnetic block (36) is fixedly connected to the top of the semicircular block (37), the outer wall of the pin (34) is inserted into the inner wall of the main frame (32), a sleeve (35) is fixedly connected to the outer wall of the main frame (32), and a post (38) is fixedly connected to the outer wall of the sub-frame (33).
3. A composite sealed roller cone drill bit with a protective cover according to claim 2, characterized in that: The outer wall of the insert (38) is inserted into the inner wall of the sleeve (35), and the top of the magnetic block (36) is magnetically attracted to the inner wall of the positioning sleeve (39).
4. A composite sealed roller cone drill bit with a protective cover according to claim 1, characterized in that: The limiting component (4) includes a fixed ring (41), with limiting rings (42) fixedly connected to the outer walls on both sides of the fixed ring (41), and rolling balls (43) rollingly connected to the inner wall of the fixed ring (41), and the rolling balls (43) are arranged in a circular array along the central axis of the fixed ring (41).
5. A composite sealed roller cone drill bit with a protective cover according to claim 4, characterized in that: The outer wall of the ball (43) is in rolling connection with the outer wall of the roller cone drill bit body (1), the outer wall of the fixing ring (41) is engaged with the outer wall of the main frame (32), and the outer wall of the fixing ring (41) is engaged with the outer wall of the sub-frame (33).