Double-sealing roller bit

Abstract

The utility model discloses a double-sealing roller bit which comprises a bit body and a roller cone, a rotating assembly is installed on the inner side of the roller cone, the rotating assembly comprises a rotating shaft and a bearing, a double-sealing assembly is installed on the roller cone and comprises a sealing plate and a sealing ring, a connecting assembly is installed at the top of the bit body, and the connecting assembly is connected with the rotating shaft. The connecting assembly comprises a connector and a first spring, a locking assembly is installed on the inner side of the connector and comprises a clamping groove and a clamping pin, and a plugging assembly is installed on the drill bit. According to the double-sealing roller bit, double-sealing work can be conducted through the sealing plate and the sealing ring, impurities are prevented from hindering rotation of the roller, and the sealing effect of the roller bit is improved. The connector is sealed through the rubber sleeve, it is avoided that impurities affect dismounting and mounting work of the drill bit, the clamping pin is clamped in the connecting mechanism through the spring, meanwhile, the impurities are prevented from entering the inner side of the clamping groove through the pin, it is avoided that the impurities affect movement of the clamping pin, the mounting firmness of the drill bit is guaranteed, and the drill bit is suitable for being used during well drilling work.

Description

Technical Field

[0001] The utility model relates to the technical field of cone bit equipment, in particular to a double-sealed cone bit. Background Technique

[0002] Cone bits are commonly used drilling equipment, which can effectively break stones and improve the working efficiency of drilling operations. The utility model patent with the patent application number CN202321119142.0 discloses a cone bit. A flange is provided at the connection between the sub and the bit body. Upper cutting teeth are provided on the circumferential side of the flange, and the upper cutting teeth extend radially along the flange. Inverted hanging teeth are provided on the side of the flange facing the sub, and the inverted hanging teeth extend axially along the flange; by providing a flange at the connection between the sub and the bit body, upper cutting teeth extending radially along the flange are provided on the circumferential side of the flange, and inverted hanging teeth extending axially along the flange are provided on the side of the flange facing the sub. After caving and sticking or burying the drill, by repeatedly rotating and lifting the cone bit, through the crushing and cutting action of the upper cutting teeth and the inverted hanging teeth, the bit can be retrieved relatively quickly; the structure of the utility model is simple and the operation is convenient, which is very practical in actual work. According to the disclosed technical solution, when the existing cone bit equipment is in use, on the one hand, during operation, impurities are likely to enter the inside of the rotating part of the cone and the inside of the connection part of the bit driving equipment, which is not conducive to ensuring the smooth rotation of the cone and is also not conducive to the disassembly and installation of the bit. On the other hand, after the bit is fixedly installed, it is likely to become loose due to pressure and vibration during operation, which is not conducive to ensuring the working safety of the bit.

[0003] Therefore, how to design a double-sealed cone bit has become the problem to be solved currently. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a double-sealed cone bit to solve the problems raised in the above background technique. The design of the utility model is reasonable and convenient to use, and is suitable for use during drilling operations.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A double-sealed cone bit, including a bit and a cone. A rotating assembly is installed inside the cone, and the rotating assembly includes a rotating shaft and a bearing. A double-sealing assembly is installed on the cone, and the double-sealing assembly includes a sealing plate and a sealing ring. A connection assembly is installed at the top of the bit, and the connection assembly includes an interface and a first spring. A locking assembly is installed inside the interface, and the locking assembly includes a card slot and a pin. A plugging assembly is installed on the bit, and the plugging assembly includes a sealing cap and a pin.

[0006] Further, the rotating shaft is integrally formed on the inner side of the bottom of the drill bit, the bearing is stuck on the inner side of the cone, and the cone is sleeved on the outer side of the rotating shaft through the bearing.

[0007] Further, one side of the sealing plate is stuck on the inner wall of the drill bit, the other side of the sealing plate is stuck on the outer side of the cone, the sealing ring is sleeved on the outer side of the rotating shaft, and the sealing ring is stuck on the inner wall of the cone.

[0008] Further, the interface is opened at the top of the drill bit, the first spring is welded to the bottom of the interface, a ring groove is opened at the top of the interface, and a rubber sleeve is bonded to the inner side of the ring groove.

[0009] Further, the card slot is opened at the top of the drill bit, the card slot is located on both sides of the interface, and the card slot is communicated with the interface.

[0010] Further, one end of the pin is stuck inside the card slot, the other end of the pin extends to the inside of the interface, and the pin is connected to the inner wall of the card slot through the second spring.

[0011] Further, a bayonet is opened on the inner side of one end of the pin, the sealing openings are opened on both sides of the drill bit, and the sealing openings are communicated with the card slot.

[0012] Further, the pin is opened inside the sealing opening, internal threads are opened on the inner wall of the sealing opening, external threads are opened on the pin, and the internal threads are matched with the external threads.

[0013] Beneficial effects: 1. When the double-sealing cone bit is in use, the drill bit drives the cone to rotate. The cone rotates under the extrusion of the drill bit and the resistance in the well, thereby crushing the stone and improving the drilling efficiency. The cone performs double-sealing work through the sealing plate and the sealing ring, avoiding impurities from entering the connection between the cone and the rotating shaft, thereby preventing impurities from hindering the rotation of the cone and ensuring the smooth rotation of the cone. There is a rubber sleeve inside the interface on the drill bit, and the interface is sealed through the rubber sleeve to prevent impurities from entering the inside of the interface, thereby avoiding impurities from affecting the disassembly and installation work of the drill bit.

[0014] 2. When installing the double-sealed roller bit, insert the connecting mechanism into the inner side of the interface, and use a tool to pull the pin through the bayonet to the inner side of the card slot until the connecting mechanism is completely inserted into the inner side of the interface. Then release the pin, and spring two pushes the pin into the inner side of the connecting mechanism. Next, seal and fix the pin on the inner side of the seal. Effectively utilize the elastic force of the spring to keep the pin tightly clamped on the inner side of the connecting mechanism. At the same time, use the pin to seal the opening to prevent impurities from entering the inner side of the card slot, avoid impurities affecting the movement of the pin, and ensure the firmness of the bit installation. When disassembling, after removing the pin, use a tool to pull the pin through the bayonet to the inner side of the card slot, and spring one automatically bounces the bit and the connecting mechanism apart, facilitating the quick disassembly of the bit and making it more convenient to use.

[0015] 3. The double-sealed roller bit is reasonably designed, efficient and convenient to use, and is suitable for use during drilling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of a double-sealed roller bit of the present utility model;

[0017] Figure 2 is a cross-sectional view of a double-sealed roller bit of the present utility model;

[0018] Figure 3 is a schematic structural view of an interface of a double-sealed roller bit of the present utility model;

[0019] In the figure: 1, bit; 2, roller; 3, rotating shaft; 4, bearing; 5, sealing plate; 6, sealing ring; 7, interface; 8, rubber sleeve; 9, spring one; 10, card slot; 11, pin; 12, spring two; 13, bayonet; 14, seal; 15, pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 3, the present utility model provides a technical solution: a double-sealed roller bit, comprising a bit 1 and a roller 2. A rotating assembly is installed inside the roller 2, and the rotating assembly includes a rotating shaft 3 and a bearing 4. A double-sealed assembly is installed on the roller 2, and the double-sealed assembly includes a sealing plate 5 and a sealing ring 6. A connecting assembly is installed at the top of the bit 1, and the connecting assembly includes an interface 7 and a first spring 9. A locking assembly is installed inside the interface 7, and the locking assembly includes a card slot 10 and a pin 11. A plugging assembly is installed on the bit 1, and the plugging assembly includes a sealing end 14 and a pin 15. One side of the sealing plate 5 is stuck on the inner wall of the bit 1, and the other side of the sealing plate 5 is stuck on the outer side of the roller 2. The sealing ring 6 is sleeved on the outer side of the rotating shaft 3, and the sealing ring 6 is stuck on the inner wall of the roller 2. The interface 7 is opened at the top of the bit 1, and the first spring 9 is welded to the bottom of the interface 7. A ring groove is opened at the top of the interface 7, and a rubber sleeve 8 is bonded inside the ring groove. During use, the bit 1 drives the roller 2 to rotate. The roller 2 rotates under the extrusion of the bit 1 and the resistance in the well, thereby crushing the stone and improving the drilling efficiency. The roller 2 performs double-sealing work through the sealing plate 5 and the sealing ring 6, preventing impurities from entering the connection between the roller 2 and the rotating shaft 3, thereby avoiding the rotation of the roller 2 being hindered by impurities and ensuring the smooth rotation of the roller 2. There is a rubber sleeve 8 inside the interface 7 on the bit 1, and the interface 7 is sealed by the rubber sleeve 8, preventing impurities from entering the inside of the interface 7, thereby avoiding the disassembly and installation of the bit 1 being affected by impurities.

[0022] In this embodiment, the rotating shaft 3 is integrally formed on the inner side of the bottom of the drill bit 1, the bearing 4 is stuck inside the cone 2, the cone 2 is sleeved on the outer side of the rotating shaft 3 through the bearing 4, the card slot 10 is opened at the top of the drill bit 1, the card slot 10 is located on both sides of the interface 7, the card slot 10 communicates with the interface 7, one end of the pin 11 is stuck inside the card slot 10, the other end of the pin 11 extends to the inside of the interface 7, the pin 11 is connected to the inner wall of the card slot 10 through the second spring 12, a bayonet 13 is opened inside one end of the pin 11, the sealing openings 14 are opened on both sides of the drill bit 1, the sealing openings 14 communicate with the card slot 10, the pins 15 are opened inside the sealing openings 14, internal threads are opened on the inner walls of the sealing openings 14, external threads are opened on the pins 15, the internal threads are matched with the external threads. During the installation operation, the connecting mechanism is inserted into the inside of the interface 7, and the pin 11 is pulled into the inside of the card slot 10 through the bayonet 13 by means of a tool. After the connecting mechanism is completely inserted into the inside of the interface 7, the pin 11 is released, and the second spring 12 pushes the pin 11 to insert into the inside of the connecting mechanism. Then, the pin 15 is hermetically fixed inside the sealing opening 14. The elastic force of the spring 12 is effectively utilized to keep the pin 11 tightly clamped inside the connecting mechanism. At the same time, the sealing opening 14 is sealed by the pin 15 to prevent impurities from entering the inside of the card slot 10 and affecting the movement of the pin 11, ensuring the firmness of the installation of the drill bit 1. During disassembly, after the pin 15 is disassembled, the pin 11 is pulled into the inside of the card slot 10 through the bayonet 13 by means of a tool, and the first spring 9 automatically bounces the drill bit 1 and the connecting mechanism apart, facilitating the quick disassembly of the drill bit 1 and making it more convenient to use.

[0023] When installing the double-sealed roller bit, insert the connecting mechanism into the inner side of the interface 7, and use a tool to pull the pin 11 into the inner side of the slot 10 through the bayonet 13. After the connecting mechanism is completely inserted into the inner side of the interface 7, release the pin 11, and the second spring 12 pushes the pin 11 into the inner side of the connecting mechanism. Then, seal and fix the pin 15 inside the seal 14. Effectively utilize the elastic force of the spring 12 to keep the pin 11 tightly clamped inside the connecting mechanism. At the same time, use the pin 15 to seal the seal 14 to prevent impurities from entering the inner side of the slot 10 and affecting the movement of the pin 11, ensuring the firm installation of the bit 1. When disassembling, after removing the pin 15, use a tool to pull the pin 11 into the inner side of the slot 10 through the bayonet 13, and the first spring 9 automatically springs the bit 1 away from the connecting mechanism, facilitating the quick disassembly of the bit 1 and making it more convenient to use. When in use, the bit 1 drives the roller 2 to rotate. The roller 2 rotates under the extrusion of the bit 1 and the resistance in the well, thereby crushing the rock and improving the drilling efficiency. The roller 2 performs double-sealing work through the sealing plate 5 and the sealing ring 6 to prevent impurities from entering the connection between the roller 2 and the rotating shaft 3, thereby preventing impurities from hindering the rotation of the roller 2 and ensuring the smooth rotation of the roller 2. There is a rubber sleeve 8 inside the interface 7 on the bit 1 to seal the interface 7 through the rubber sleeve 8, preventing impurities from entering the inner side of the interface 7 and affecting the disassembly and installation work of the bit 1.

[0024] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-sealed roller drill bit, comprising a drill bit (1) and a roller (2), wherein a rotating assembly is installed inside the roller (2), and the rotating assembly comprises a rotating shaft (3) and a bearing (4), wherein: A double sealing assembly is installed on the cone (2), and the double sealing assembly includes a sealing plate (5) and a sealing ring (6). A connecting assembly is installed on the top of the drill bit (1), and the connecting assembly includes an interface (7) and a spring (9). A locking assembly is installed on the inner side of the interface (7), and the locking assembly includes a slot (10) and a pin (11). A plugging assembly is installed on the drill bit (1), and the plugging assembly includes a seal (14) and a pin (15).

2. A double-seal roller drill bit according to claim 1, characterized in that: The rotating shaft (3) is integrally formed on the inner side of the bottom of the drill bit (1), the bearing (4) is clamped on the inner side of the gear (2), and the gear (2) is sleeved on the outer side of the rotating shaft (3) through the bearing (4).

3. A double-seal roller drill bit according to claim 2, characterized in that: One side of the sealing plate (5) is clamped on the inner wall of the drill bit (1), and the other side of the sealing plate (5) is clamped on the outer side of the gear (2). The sealing ring (6) is sleeved on the outer side of the rotating shaft (3), and the sealing ring (6) is clamped on the inner wall of the gear (2).

4. A double-seal roller drill bit according to claim 3, characterized in that: The interface (7) is provided at the top of the drill bit (1), the spring 1 (9) is welded to the bottom of the interface (7), an annular groove is provided at the top of the interface (7), and a rubber sleeve (8) is bonded to the inner side of the annular groove.

5. The double-seal roller drill bit according to claim 1, characterized in that: The card slot (10) is provided at the top of the drill bit (1), the card slot (10) is located on both sides of the interface (7), and the card slot (10) is communicated with the interface (7).

6. A double-seal roller drill bit according to claim 5, characterized in that: One end of the bayonet (11) is clamped on the inner side of the slot (10), and the other end of the bayonet (11) extends to the inner side of the interface (7). The bayonet (11) is connected to the inner wall of the slot (10) via a second spring (12).

7. A double-seal roller drill bit according to claim 6, characterized in that: A bayonet (13) is provided on the inner side of one end of the bayonet pin (11), and the sealing opening (14) is provided on both sides of the drill bit (1), and the sealing opening (14) is connected to the bayonet slot (10).

8. A double-seal roller drill bit according to claim 7, characterized in that: The pin (15) is provided on the inner side of the seal (14); an inner thread is provided on the inner wall of the seal (14); an outer thread is provided on the pin (15); and the inner thread matches the outer thread.

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