A mining roller cone bit

Abstract

The application provides a mine roller bit, and belongs to the technical field of drilling equipment. The mine roller bit comprises a leg, a roller, a connecting head and a chip throwing assembly. The leg is provided with a plurality of claws, and the claws are provided with shaft journals. The roller is rotatably installed on the shaft journals, and the roller is provided with an installation position. The connecting head is arranged on the leg. The chip throwing assembly is installed on the installation position. The chip throwing assembly comprises a fixed ring body, a force transmission part, an extension part and a chip throwing part. The fixed ring body is installed on the installation position, and a plurality of through groove groups are formed in the fixed ring body. The through groove groups comprise a first hole groove, a second hole groove and a connecting groove, and the force transmission part is arranged in the connecting groove. The extension part is arranged in the first hole groove. The chip throwing part is arranged in the second hole groove. During rotation of the roller, the chip throwing part is rotated to cooperate with the drilling fluid to disperse the rock cuttings and the mud adhered between the cutting edges, so that congestion between the cutting edges is avoided, and the cutting efficiency in the drilling process is improved.

Description

Technical Field

[0001] This invention belongs to the field of drilling equipment technology, and more specifically, relates to a mining roller cone drill bit. Background Technology

[0002] Roller cone bits are the most widely used type of drilling bit. During operation, the cutting edges of a roller cone bit alternately contact the bottom of the well, resulting in low rock-breaking torque, a small contact area between the cutting edges and the bottom of the well, high specific pressure, and easy penetration into the formation, thus relatively reducing wear. Roller cone bits can adapt to a variety of formations, from soft to hard.

[0003] During drilling, drilling fluid is sprayed out through the nozzles on the roller cone bit, which can directly flush the rock cuttings cut by the cutting teeth to the surface. However, in current drilling processes, drilling fluid flushing is often inadequate, causing the rock cuttings to mix with mud and adhere to the cutting edges of the roller cone. This can easily lead to a decrease in cutting efficiency during drilling, thus delaying the construction period.

[0004] Based on this, the inventor applied to design a mining roller cone drill bit. Summary of the Invention

[0005] The purpose of this invention is to provide a mining roller cone drill bit to solve the technical problem in the prior art where insufficient flushing of drilling fluid leads to rock cuttings mixed with mud adhering between the cutting edges of the roller cone, resulting in a decrease in cutting efficiency during drilling.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A mining roller cone drill bit is provided, comprising a toothed plate, a roller cone, a connecting head, and a chip-throwing assembly; the toothed plate is provided with a plurality of toothed claws, and each toothed claw has a journal; the roller cone is rotatably mounted on the journal, and the roller cone has a mounting position; the connecting head is disposed on the toothed plate for connection with a drill rod; the chip-throwing assembly is mounted on the mounting position; wherein, the chip-throwing assembly comprises a fixed ring, a force-transmitting part, a telescopic part, and a chip-throwing part; the fixed ring is mounted on the mounting position, and the fixed ring has a plurality of... A series of interconnected trenches are provided, comprising a first trench, a second trench, and a connecting trench. The first trench is connected to the second trench via the connecting trench. A force transmission part is movably disposed within the connecting trench. A telescopic part is movably disposed within the first trench, used to push the force transmission part to move along the connecting trench when the telescopic part retracts into the first trench after contacting the rock wall. A debris-throwing part is rotatably disposed within the second trench, used to rotate and throw away mud and rock debris near the debris-throwing part when the force transmission part moves along the connecting trench.

[0007] In one possible implementation, based on the above technical solutions, the telescopic part includes a fixed sleeve, a telescopic head, and a first elastic element. The fixed sleeve is connected to the inner wall of the first slot. One end of the telescopic head extends out of the fixed sleeve, and the other end is fitted with the first elastic element. A first stop is provided in the first slot. One end of the first elastic element abuts against the first stop, and the other end abuts against the bottom wall of the fixed sleeve.

[0008] In one possible implementation, based on the above technical solutions, the chip-throwing part includes a rotating sleeve, a chip-throwing head, a lifting column, and a second elastic element. The rotating sleeve is connected to the inner wall of the second slot, and a rotating ring is rotatably provided on the rotating sleeve. The chip-throwing head is connected to the rotating ring, and the end of the chip-throwing head extends out of the rotating ring. The chip-throwing head and the lifting column are connected by a thrust structure. The second elastic element is sleeved on the lifting column, and a second stop is provided in the second slot. One end of the second elastic element abuts against the second stop, and the other end abuts against the bottom wall of the rotating sleeve.

[0009] In one possible implementation, based on the above technical solutions, the thrust structure includes a thrust cylinder and a force-receiving column. The thrust cylinder is located at one end of the lifting column, and the force-receiving column is located at one end of the chip-throwing head. The inner surface of the thrust cylinder is provided with a threaded protrusion, and the outer surface of the force-receiving column is provided with a threaded groove that matches the threaded protrusion. The force-receiving column is inserted into the thrust cylinder, and the threaded protrusion is located in the threaded groove, so that when the lifting column rises and falls, it drives the chip-throwing head to rotate.

[0010] In one possible implementation, based on the above technical solutions, the force transmission part includes a transverse column, one end of which has a first inclined surface and the other end has a second inclined surface. One end of the telescopic head has a third inclined surface that abuts against the first inclined surface. One end of the lifting column has a fourth inclined surface that abuts against the second inclined surface. This allows the transverse column to move when the telescopic head retracts into the first slot, thereby causing the transverse column to push the lifting column upward.

[0011] In one possible implementation, based on the above technical solutions, one end of the sling head is provided with a plurality of sling blades, and a sling groove is formed between two adjacent sling blades.

[0012] In conjunction with the above technical solutions, in one possible implementation, the chip-throwing section is further provided with a hydraulic drive structure. The hydraulic drive structure includes a rubber sleeve and an impact hole. The rubber sleeve is fitted on the outer peripheral surface of the thrust cylinder, and the outer peripheral surface of the rubber sleeve contacts the inner wall of the rotating sleeve. The impact hole is provided on the bottom wall of the chip-throwing head and communicates with the chip-throwing groove. A water filtration assembly is also provided inside the impact hole. The water filtration assembly includes an upper support plate, a lower support plate, and a water filtration pipe. The upper support plate is located on one side of the impact hole, and the lower support plate is located on the other side of the impact hole. The water filtration pipe is fixedly connected inside the impact hole, with one end connected to the upper support plate and the other end connected to the lower support plate. The lower support plate has a flow hole that communicates with the water filtration pipe. The water filtration pipe extends out of the impact hole, and a water filtration hole is provided at the end of the water filtration pipe near the upper support plate.

[0013] In one possible implementation, based on the above technical solutions, the roller cone is provided with a plurality of impact cutter sets. Each impact cutter set includes an impact cylinder, an impact head, and an impact assembly. The impact cylinder is disposed within the mounting groove of the roller cone. The impact head is movably disposed within the impact cylinder, with its tip extending beyond the impact cylinder and higher than the cutting edge on the roller cone. The impact assembly is disposed within the impact cylinder to provide impact force to the impact head when it contacts the rock wall.

[0014] In one possible implementation, based on the above technical solutions, the punching cylinder is provided with a third elastic element, a movable block, and a fourth elastic element. The movable block is movably disposed inside the punching cylinder. One end of the third elastic element abuts against the movable block, and the other end abuts against the punching head. One end of the fourth elastic element abuts against the movable block, and the other end abuts against the bottom wall of the punching cylinder. The punching head is rotatably provided with a punch head, which abuts against the abutment position on the movable block and can rotate into the through groove of the movable block.

[0015] In one possible implementation, based on the above technical solutions, the punch head includes a punch seat, a torsion spring, and a punch head. The punch seat is located at the end of the punch head, and the punch head is hinged to the punch seat via a hinge shaft. The end of the punch head is hemispherical. The torsion spring is sleeved on the hinge shaft, with one end of the torsion spring abutting against the punch seat and the other end abutting against the punch head.

[0016] The beneficial effects of the mining roller cone drill bit provided by this invention are as follows: Compared with the prior art, this invention provides a chip-throwing assembly at the mounting position of the roller cone. The chip-throwing assembly includes a fixed ring, a force transmission part, a telescopic part, and a chip-throwing part. When the mining roller cone drill bit provided by this invention starts working, the roller cone begins to rotate. During this process, the telescopic part contacts the rock wall and is pressed into the first slot by the rock wall, pushing the force transmission part to move. When the force transmission part moves, it pushes the chip-throwing part to rotate. By rotating, the chip-throwing part can cooperate with the drilling fluid to disperse the rock cuttings and mud adhering between the cutting edges, avoiding clogging between the cutting edges, thereby improving the cutting efficiency during the drilling process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a mining roller cone drill bit provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a mining roller cone drill bit with an impact component and mounting position provided in an embodiment of the present invention; Figure 3 A schematic diagram of a mining roller cone drill bit with an impact component and a chip-throwing component installed on the roller cone, provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a fixing ring for a mining roller cone drill bit, provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of the through-groove assembly of a mining roller cone drill bit provided in an embodiment of the present invention; Figure 6 A schematic diagram of the telescopic part, force transmission part, and chip-throwing part of a mining roller cone drill bit provided in an embodiment of the present invention; Figure 7 for Figure 6 A sectional view; Figure 8 A schematic diagram of the force transmission part of a mining roller cone drill bit provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of a water filtration assembly for a mining roller cone drill bit provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the impact cutter assembly of a mining roller cone drill bit provided in an embodiment of the present invention; Figure 11 A cross-sectional view of a punch cutter assembly for a mining roller cone drill bit provided in an embodiment of the present invention; Figure 12 An exploded view of a punch cutter assembly for a mining roller cone drill bit provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the punch head of a mining roller cone drill bit provided in an embodiment of the present invention.

[0019] The labels for the attached figures are as follows: 100. Toothed palm; 200. Toothed claw; 300. Toothed wheel; 310. Mounting position; 400. Connector; 500, chip-throwing assembly; 510, fixing ring; 511, first slot; 5111, first stop block; 512, Second slot; 5121, Second stop; 513, Connecting slot; 520, Force transmission part; 521. First inclined plane; 522. Second inclined plane; 530. Telescopic part; 531. Fixing sleeve; 532. Telescopic head; 5321. Third inclined plane; 533. First elastic element; 540. Debris throwing section; 541. Rotating sleeve; 5411. Rotating ring; 542. Chip-throwing head; 5421. Chip-throwing blade; 543. Lifting column; 5431. Fourth inclined plane; 544. Second elastic element; 545. Thrust cylinder; 5451. Threaded protrusion; 546. Load-bearing column; 5461. Threaded groove; 547. Rubber sleeve; 548. Impact hole; 550. Water filter assembly; 551. Upper support plate; 552. Lower support plate; 5521. Flow hole; 553, water filter pipe; 5531, water filter hole; 600, impact knife assembly; 610, impact cylinder; 620. Impact head; 630. Impact assembly; 631. Third elastic element; 632. Fourth elastic element; 633, Moving block; 6331, Through slot; 6332, Abutment position; 640, Punch head; 641, Punch seat; 642. Torsion spring; 643. Punch component. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0022] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0024] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0026] The present invention will now describe a novel mining roller cone 300 drill bit.

[0027] like Figure 1As shown, a mining roller cone drill bit provided by the present invention includes a toothed plate 100, a roller cone 300, a connecting head 400, and a chip-throwing assembly 500. The toothed plate 100 is provided with a plurality of toothed claws 200, and a journal is provided on each toothed claw 200. The roller cone 300 is rotatably mounted on the journal, and a mounting position 310 is provided on the roller cone 300. The connecting head 400 is provided on the toothed plate 100 for connecting with the drill rod. The chip-throwing assembly 500 is mounted on the mounting position 310. The chip-throwing assembly 500 includes a fixed ring 510, a force transmission part 520, a telescopic part 530, and a chip-throwing part 540. The fixed ring 510 is mounted on the mounting position 310. The structure has several interconnected slots, including a first slot 511, a second slot 512, and a connecting slot 513. The first slot 511 is connected to the second slot 512 via the connecting slot 513. A force transmission part 520 is movably disposed in the connecting slot 513. A telescopic part 530 is movably disposed in the first slot 511, which pushes the force transmission part 520 to move along the connecting slot 513 when the telescopic part 530 retracts into the first slot 511 after contacting the rock wall. A debris-throwing part 540 is rotatably disposed in the second slot 512, which rotates when the force transmission part 520 moves along the connecting slot 513 and throws away mud and rock debris near the debris-throwing part 540.

[0028] This invention provides a mining roller cone drill bit, which, compared with the prior art, features threads etched on the roller cone 300 (e.g., ...). Figure 2 As shown, the mounting position 310 is formed, allowing the chip-throwing assembly 500 to be installed on the mounting position 310. The chip-throwing assembly 500 includes a fixed ring 510, a force transmission part 520, a telescopic part 530, and a chip-throwing part 540. When the mining roller cone drill bit provided in this invention starts working, the roller cone 300 begins to rotate. During this process, the telescopic part 530 contacts the rock wall and is pressed into the first slot 511 by the rock wall, pushing the force transmission part 520 to move. When the force transmission part 520 moves, it pushes the chip-throwing part 540 to rotate. By rotating, the chip-throwing part 540 can cooperate with the drilling fluid to disperse the rock cuttings and mud adhering between the cutting edges, avoiding clogging between the cutting edges, thereby improving the cutting efficiency during the drilling process.

[0029] like Figure 6 and Figure 7 As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the telescopic part 530 includes a fixed sleeve 531, a telescopic head 532 and a first elastic element 533. The fixed sleeve 531 is connected to the inner wall of the first slot 511. One end of the telescopic head 532 extends out of the fixed sleeve 531, and the other end is fitted with the first elastic element 533. A first stop block 5111 is provided in the first slot 511. One end of the first elastic element 533 abuts against the first stop block 5111, and the other end abuts against the bottom wall of the fixed sleeve 531.

[0030] Specifically, the first slot 511 and the fixed sleeve 531 are provided with matching threads, and the two are connected by threads, or they can be connected by welding. When the roller 300 starts to rotate, the telescopic head 532 will contact the rock wall and be pushed into the first slot 511 by the rock wall. During this process, the first elastic element 533 is continuously compressed. When the telescopic head 532 no longer contacts the rock wall, the elastic force of the first elastic element 533 is released instantly, and the telescopic head 532 is quickly reset. During the reset process, the telescopic head 532 will impact the drilling fluid nearby, which will accelerate its flow and play a certain role in preventing rock cuttings and mud from adhering between the cutting edges.

[0031] like Figure 6 and Figure 7 As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the chip-throwing section 540 includes a rotating sleeve 541, a chip-throwing head 542, a lifting column 543, and a second elastic member 544. The rotating sleeve 541 is connected to the inner wall of the second slot 512. A rotating ring 5411 is rotatably provided on the rotating sleeve 541. The chip-throwing head 542 is connected to the rotating ring 5411, and the end of the chip-throwing head 542 extends out of the rotating ring 5411. The chip-throwing head 542 and the lifting column 543 are connected by a thrust structure. The second elastic member 544 is sleeved on the lifting column 543. A second stop 5121 is provided in the second slot 512. One end of the second elastic member 544 abuts against the second stop 5121, and the other end abuts against the bottom wall of the rotating sleeve 541.

[0032] It should be noted that the second slot 512 and the rotating sleeve 541 are provided with matching threads, and the two are connected by threads, or they can be connected by welding. The rotating ring 5411 on the rotating sleeve 541 can rotate relative to the rotating sleeve 541. When the lifting column 543 rises, the thrust structure can drive the cuttings head 542 to rotate. At the same time, the second elastic element 544 is continuously compressed. When the telescopic head 532 is reset, the elastic force of the second elastic element 544 is released instantly, pushing the lifting column 543 to fall and reset. At the same time, the thrust structure can also drive the cuttings head 542 to rotate in the opposite direction again. Through the two rotations of the cuttings head 542, the flow rate of drilling fluid between the cutting edges on the roller cone 300 can be greatly accelerated, avoiding the accumulation of cuttings and mud. The first elastic element 533 and the second elastic element 544 can be selected as springs, elastic bands or elastic ropes, etc., and are preferably springs.

[0033] like Figure 7As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the thrust structure includes a thrust cylinder 545 and a force-receiving column 546. The thrust cylinder 545 is located at one end of the lifting column 543, and the force-receiving column 546 is located at one end of the chip-throwing head 542. The inner surface of the thrust cylinder 545 is provided with a threaded protrusion 5451, and the outer surface of the force-receiving column 546 is provided with a threaded groove 5461 that matches the threaded protrusion 5451. The force-receiving column 546 is inserted into the thrust cylinder 545, and the threaded protrusion 5451 is located in the threaded groove 5461, so that when the lifting column 543 rises and falls, it drives the chip-throwing head 542 to rotate.

[0034] Here, when the lifting column 543 rises, it will drive the thrust cylinder 545 to rise as well. During the rise, since the chip throwing head 542 can only rotate and cannot rise or fall, the threaded protrusion 5451 on the inner surface of the thrust cylinder 545 continuously enters the threaded groove 5461 on the outer surface of the force-bearing column 546 and drives it to rotate. When the lifting column 543 falls, it will drive the thrust cylinder 545 to fall as well, causing the threaded protrusion 5451 to continuously disengage from the threaded groove 5461. At this time, the chip throwing head 542 will rotate in the opposite direction again.

[0035] like Figure 6 and Figure 7 As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the force transmission part 520 includes a transverse column, one end of which is provided with a first inclined surface 521 and the other end with a second inclined surface 522. One end of the telescopic head 532 is provided with a third inclined surface 5321, which abuts against the first inclined surface 521. One end of the lifting column 543 is provided with a fourth inclined surface 5431, which abuts against the second inclined surface 522. When the telescopic head 532 is retracted into the first slot 511, it can push the transverse column to move, thereby the transverse column pushes the lifting column 543 to rise.

[0036] Specifically, when the telescopic head 532 retracts into the fixed sleeve 531, the third inclined surface 5321 will also move downward, thereby pushing the first inclined surface 521 to move, which in turn drives the entire horizontal column to move. When the horizontal column moves, it will drive the fourth inclined surface 5431 to move upward through the second inclined surface 522. When the first inclined surface 521 moves upward, the entire lifting column 543 will move upward together.

[0037] like Figure 6 As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, one end of the chip-throwing head 542 is provided with a plurality of chip-throwing blades 5421, and a chip-throwing groove is formed between two adjacent chip-throwing blades 5421.

[0038] Here, the invention provides a mining roller cone drill bit that, when starting to drill, sprays out a large amount of drilling fluid. This large amount of drilling fluid enters the contact surface between the roller cone 300 and the rock wall, and enters the cuttings chute. A large amount of mud and rock cuttings will also accumulate here. When the lifting column 543 rises, the cuttings chute 5421 will rotate forward once, initially throwing the mud and rock cuttings out of the cuttings chute. When the lifting column 543 descends, the cuttings chute 5421 will rotate in the opposite direction once more, completely throwing out the mud and rock cuttings remaining in the cuttings chute. Through the two rotations of the cuttings chute 5421 in different directions, the mud and rock cuttings in the cuttings chute can be fully thrown out of the cuttings chute, and the flow of drilling fluid can be accelerated, reducing the probability of mud and rock cuttings adhering to the cutting edges on the roller cone 300.

[0039] like Figure 7 and Figure 9 As shown in the embodiment of the present invention, in a specific embodiment of a mining roller cone drill bit, the chip-throwing section 540 is further provided with a hydraulic drive structure. The hydraulic drive structure includes a rubber sleeve 547 and an impact hole 548. The rubber sleeve 547 is sleeved on the outer peripheral surface of the thrust cylinder 545. The outer peripheral surface of the rubber sleeve 547 is in contact with the inner wall of the rotating sleeve 541. The impact hole 548 is provided on the bottom wall of the chip-throwing head 542 and communicates with the chip-throwing groove.

[0040] It is important to note that during the drilling process, a large amount of drilling fluid enters the interior of the rotating sleeve 541 through the impact hole 548. When the riser 543 rises rapidly, it will drive the rubber sleeve 547 on the thrust cylinder 545 to rise as well, thereby pushing a large amount of drilling fluid inside the rotating sleeve 541 to be ejected rapidly from the impact hole 548. The impact hole 548 is connected to the cuttings ejection groove, which can further flush away the mud and cuttings in the cuttings ejection groove. At the same time, the ejected drilling fluid can also further accelerate the flow rate of the drilling fluid in the vicinity, so that the mud and cuttings no longer adhere to the cutting edges on the roller cone 300, thus improving the cutting efficiency.

[0041] A water filtration assembly 550 is also provided inside the impact hole 548. The water filtration assembly 550 includes an upper support plate 551, a lower support plate 552, and a water filtration pipe 553. The upper support plate 551 is located on one side of the impact hole 548, and the lower support plate 552 is located on the other side of the impact hole 548. The water filtration pipe 553 is fixedly connected inside the impact hole 548, and one end of the water filtration pipe 553 is connected to the upper support plate 551, and the other end is connected to the lower support plate 552. The lower support plate 552 is provided with a flow hole 5521, which communicates with the water filtration pipe 553. The water filtration pipe 553 extends out of the impact hole 548, and the end of the water filtration pipe 553 near the upper support plate 551 is provided with a water filtration hole 5531.

[0042] When the lifting column 543 rises rapidly, it drives the rubber sleeve 547 on the thrust cylinder 545 to rise as well, thereby pushing a large amount of drilling fluid inside the rotating sleeve 541 into the water filter pipe 553 through the flow hole 5521 of the lower support plate 552, and then spraying it out through the water filter hole 5531. When the lifting column 543 descends rapidly, it drives the rubber sleeve 547 on the thrust cylinder 545 to descend as well, thereby drawing a large amount of drilling fluid near the cuttings spatter into the water filter pipe 553 through the water filter hole 5531, and then into the rotating sleeve 541 through the flow hole 5521 of the lower support plate 552. This process is repeated, and the water filter assembly prevents a large amount of mud and cuttings from entering the rotating sleeve 541.

[0043] like Figure 10 , 11 and Figure 12 As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the roller cone 300 is provided with a plurality of impact cutter sets 600. The impact cutter set 600 includes an impact cylinder 610, an impact head 620, and an impact assembly 630. The impact cylinder 610 is disposed in the mounting groove of the roller cone 300; the impact head 620 is movably disposed in the impact cylinder 610, and the top end of the impact head 620 extends out of the impact cylinder 610 and is higher than the cutting edge on the roller cone 300; the impact assembly 630 is disposed in the impact cylinder 610 and is used to provide impact force to the impact head 620 when the impact head 620 contacts the rock wall.

[0044] Specifically, when it is necessary to install the punch cylinder 610 into the mounting slot, the outer circumferential surface of the punch cylinder 610 is provided with threads, and the mounting slot is provided with matching threads. The punch cylinder 610 can be installed simply by rotating it. When the mining roller cone drill bit provided by this invention begins drilling, the roller cone 300 starts to rotate. Since the impact head 620 is higher than the cutting edge, the impact head 620 first contacts the rock wall. Under the pressure of the rock wall, the impact head 620 retracts into the impact cylinder 610. After the impact head 620 retracts into the impact cylinder 610 for a certain distance, the impact component 630 will give the impact head 620 a force, causing it to quickly extend out of the impact cylinder 610 and impact the rock wall. The rock wall breaks under the impact force, which makes it easier for the cutting edge to cut the rock wall in the subsequent process.

[0045] like Figure 10 , 11 and Figure 12As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the impact cylinder 610 is provided with a third elastic element 631, a moving block 633 and a fourth elastic element 632. The moving block 633 is movably disposed in the impact cylinder 610. One end of the third elastic element 631 abuts against the moving block 633 and the other end abuts against the impact head 620. One end of the fourth elastic element 632 abuts against the moving block 633 and the other end abuts against the bottom wall of the impact cylinder 610. The impact head 620 is rotatably provided with a punch head 640. The punch head 640 abuts against the abutment position 6332 on the moving block 633 and can rotate into the through groove 6331 of the moving block 633.

[0046] Here, as the gear 300 rotates, the impact head 620 comes into contact with the rock wall. Under the force of the rock wall, the impact head 620 retracts into the impact cylinder 610 a certain distance, thereby compressing the third elastic element 631. During the retraction process, the punch head 640 on the impact head 620 continues to push the moving block 633, compressing the fourth elastic element 632. When the compression reaches a certain degree, the punch head 640 rotates and enters the through groove 6331 of the moving block 633. During this period, the fourth elastic element 632 is not affected by the movement. The force of the moving block 633 causes the fourth elastic element 632 to immediately release its elastic force, pushing the moving block 633 to reset. The bottom wall of the through groove 6331 of the moving block 633 contacts the punch head 640, giving the punch head 620 a huge outward displacement force. At the same time, when the punch head 620 moves outward, the third elastic element 631 also releases its elastic force, giving the punch head 620 another outward displacement force. Finally, under the action of the resultant force, the punch head 620 breaks the rock wall. The third elastic element 631 and the fourth elastic element 632 can be selected as springs, elastic bands or elastic ropes, etc., preferably springs.

[0047] like Figure 13 As shown in the embodiment of the present invention, in a specific implementation of a mining roller cone drill bit, the punch head 640 includes a punch seat 641, a torsion spring 642, and a punch member 643. The punch seat 641 is located at the end of the punch head 620. The punch member 643 is hinged to the punch seat 641 via a hinge shaft, and the end of the punch member 643 is hemispherical. The torsion spring 642 is sleeved on the hinge shaft. One end of the torsion spring 642 abuts against the punch seat 641, and the other end abuts against the punch member 643. Because one end of the torsion spring 642 abuts against the punch seat 641 and the other end abuts against the punch member 643, the punch member 643 remains in an inclined state under the action of the torsion spring 642.

[0048] When the punch 643 is tilted, its end abuts against the abutment position 6332 on the moving block 633. When the punch head 620 begins to compress the third elastic member 631, the punch 643 mounted on the punch head 620 begins to compress the moving block 633. During the downward pressing process, because the end of the punch 643 is hemispherical, the end of the punch 643 gradually disengages from the abutment position 6332 and eventually falls into the through groove 6331 of the moving block 633. At this time, the fourth... The elastic element 632 is not subjected to the force of the moving block 633. The fourth elastic element 632 immediately releases its elastic force, pushing the moving block 633 to reset. The bottom wall of the through groove 6331 of the moving block 633 contacts the end of the impact head 620, giving the impact head 620 a huge outward displacement force. At the same time, when the impact head 620 moves outward, the third elastic element 631 will also release its elastic force, giving the impact head 620 another outward displacement force. Finally, under the action of the resultant force, the impact head 620 breaks the rock wall.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A mining roller cone drill bit, characterized in that, include: The toothed palm (100) is provided with a plurality of toothed claws (200), and the toothed claws (200) are provided with journals; A toothed gear (300) is rotatably mounted on the journal, and the toothed gear (300) is provided with a mounting position (310). A connector (400) is provided on the toothed end (100) for connecting to the drill rod; A chip-throwing assembly (500) is mounted on the mounting position (310); The chip-throwing assembly (500) includes: A fixed ring (510) is installed on the mounting position (310). The fixed ring (510) has a plurality of through grooves. The through grooves include a first hole groove (511), a second hole groove (512) and a connecting groove (513). The first hole groove (511) is connected to the second hole groove (512) through the connecting groove (513). The force transmission unit (520) is movably disposed within the connecting groove (513); The telescopic part (530) is movably disposed in the first cavity (511) and is used to push the force transmission part (520) to move along the connecting groove (513) when the telescopic part (530) retracts into the first cavity (511) after contacting the rock wall; The chip-throwing section (540) is rotatably disposed within the second slot (512); When the machine starts working, the toothed wheel (300) begins to rotate, the telescopic part (530) will contact the rock wall and be pressed into the first slot (511) by the rock wall, and push the force transmission part (520) to move. When the force transmission part (520) moves, it will push the cuttings throwing part (540) to rotate. By rotating, the cuttings throwing part (540) can cooperate with the drilling fluid to disperse the rock cuttings and mud adhering between the cutting edges. The chip-throwing part (540) includes a rotating sleeve (541), a chip-throwing head (542), a lifting column (543), and a second elastic element (544). The rotating sleeve (541) is connected to the inner wall of the second slot (512). A rotating ring (5411) is rotatably provided on the rotating sleeve (541). The chip-throwing head (542) is connected to the rotating ring (5411), and the end of the chip-throwing head (542) extends out of the rotating ring (5411). The chip-throwing head (542) and the lifting column (543) are connected by a thrust structure. The second elastic element (544) is sleeved on the lifting column (543). A second stop (5121) is provided in the second slot (512). One end of the second elastic element (544) abuts against the second stop (5121), and the other end abuts against the bottom wall of the rotating sleeve (541). When the lifting column (543) rises or falls, the sling head (542) is driven to rotate by the thrust structure.

2. The mining roller cone drill bit as described in claim 1, characterized in that: The telescopic part (530) includes a fixed sleeve (531), a telescopic head (532), and a first elastic element (533). The fixed sleeve (531) is connected to the inner wall of the first slot (511). One end of the telescopic head (532) extends out of the fixed sleeve (531), and the other end is fitted with the first elastic element (533). A first stop (5111) is provided in the first slot (5111). One end of the first elastic element (533) abuts against the first stop (5111), and the other end abuts against the bottom wall of the fixed sleeve (531).

3. The mining roller cone drill bit as described in claim 2, characterized in that: The thrust structure includes a thrust cylinder (545) and a force-receiving column (546). The thrust cylinder (545) is located at one end of the lifting column (543), and the force-receiving column (546) is located at one end of the chip-throwing head (542). The inner surface of the thrust cylinder (545) is provided with a threaded protrusion (5451), and the outer surface of the force-receiving column (546) is provided with a threaded groove (5461) that matches the threaded protrusion (5451). The force-receiving column (546) is inserted into the thrust cylinder (545), and the threaded protrusion (5451) is located in the threaded groove (5461) so that when the lifting column (543) rises and falls, it drives the chip-throwing head (542) to rotate.

4. The mining roller cone drill bit as described in claim 3, characterized in that: The force transmission part (520) includes a transverse column, one end of which is provided with a first inclined surface (521) and the other end with a second inclined surface (522). One end of the telescopic head (532) is provided with a third inclined surface (5321), which abuts against the first inclined surface (521). One end of the lifting column (543) is provided with a fourth inclined surface (5431), which abuts against the second inclined surface (522). When the telescopic head (532) retracts into the first slot (511), it can push the transverse column to move, thereby the transverse column pushes the lifting column (543) to rise.

5. The mining roller cone drill bit as described in claim 4, characterized in that: One end of the sling head (542) is provided with a plurality of sling blades (5421), and a sling groove is formed between two adjacent sling blades (5421).

6. The mining roller cone drill bit as described in claim 5, characterized in that: The chip-throwing section (540) is also provided with a hydraulic drive structure, which includes a rubber sleeve (547) and an impact hole (548). The rubber sleeve (547) is sleeved on the outer peripheral surface of the thrust cylinder (545), and the outer peripheral surface of the rubber sleeve (547) contacts the inner wall of the rotating sleeve (541). The impact hole (548) is provided on the bottom wall of the chip-throwing head (542) and communicates with the chip-throwing groove. A water filter assembly (550) is also provided inside the impact hole (548). The water filter assembly (550) includes an upper support plate (551), a lower support plate (552), and a water filter pipe (553). The upper support plate (551) is located on one side of the impact hole (548), and the lower support plate (552) is located on the other side of the impact hole (548). The water filter pipe (553) is fixedly connected inside the impact hole (548), and one end of the water filter pipe (553) is connected to the upper support plate (551), and the other end is connected to the lower support plate (552). The lower support plate (552) is provided with a flow hole (5521), which communicates with the water filter pipe (553). The water filter pipe (553) extends out of the impact hole (548), and the end of the water filter pipe (553) near the upper support plate (551) is provided with a water filter hole (5531).

7. The mining roller cone drill bit as described in claim 1, characterized in that: The gear (300) is provided with a plurality of impact cutter sets (600), each impact cutter set (600) including an impact cylinder (610), an impact head (620), and an impact assembly (630). The impact cylinder (610) is disposed in the mounting groove of the gear (300); the impact head (620) is movably disposed in the impact cylinder (610), and the top end of the impact head (620) extends out of the impact cylinder (610) and is higher than the cutting edge on the gear (300); the impact assembly (630) is disposed in the impact cylinder (610) to provide impact force to the impact head (620) when the impact head (620) contacts the rock wall.

8. The mining roller cone drill bit as described in claim 7, characterized in that: The impact assembly (630) includes a third elastic element (631), a movable block (633), and a fourth elastic element (632). The movable block (633) is movably disposed inside the impact cylinder (610). One end of the third elastic element (631) abuts against the movable block (633), and the other end abuts against the impact head (620). One end of the fourth elastic element (632) abuts against the movable block (633), and the other end abuts against the bottom wall of the impact cylinder (610). The impact head (620) is rotatably provided with a punch head (640). The punch head (640) abuts against the abutment position (6332) on the movable block (633) and can rotate into the through groove (6331) of the movable block (633).

9. The mining roller cone drill bit as described in claim 8, characterized in that: The punch head (640) includes a punch seat (641), a torsion spring (642), and a punch head (620). The punch seat (641) is located at the end of the punch head (620). The punch head (620) is hinged to the punch seat (641) via a hinge shaft, and the end of the punch head (620) is hemispherical. The torsion spring (642) is sleeved on the hinge shaft. One end of the torsion spring (642) abuts against the punch seat (641), and the other end abuts against the punch head (620).

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