Mining roller bit

Abstract

The invention provides a mining roller bit, and belongs to the technical field of drilling equipment. The invention provides a mining roller bit. The mining roller bit comprises a bit leg, a roller, a connector and a scrap throwing assembly. The tooth palm is provided with a plurality of tooth claws, and shaft necks are arranged on the tooth claws; the roller cone is rotationally mounted on the shaft neck, and a mounting position is arranged on the roller cone; the connector is arranged on the bit leg; the scrap throwing assembly is mounted on the mounting position; the scrap throwing assembly comprises a fixed ring body, a force transmission part, a telescopic part and a scrap throwing part; the fixed ring body is mounted on the mounting position, a plurality of through groove groups are formed in the fixed ring body, each through groove group comprises a first hole groove, a second hole groove and a connecting groove, and the force transmission part is arranged in the connecting groove; the telescopic part is arranged in the first hole groove; the scrap throwing part is arranged in the second hole groove; in the rotating process of the cone, the scrap throwing part can be matched with drilling fluid by rotating, rock debris and slurry adhered between the cutting edges are scattered, blockage between the cutting edges is avoided, and therefore the cutting efficiency in the drilling process is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, and more particularly relates to a mining cone drill bit. Background Art

[0002] The roller cone drill bit is the most widely used type of drilling bit. Its cutting edges alternately contact the wellbore during operation, resulting in low rock-breaking torque, a small contact area between the cutting edges and the wellbore, and high specific pressure, making it easier to penetrate the formation and thus relatively less wear. Roller cone drill bits are adaptable to a wide range of formations, from soft to hard.

[0003] During the drilling process of the roller drill bit, the drilling fluid is ejected through the nozzle on the roller drill bit, which can directly flush the rock cuttings cut by the cutting teeth to the ground. However, in the current drilling process, the drilling fluid is often not flushed properly, resulting in the cut rock cuttings mixed with mud and adhering to the blades on the roller. This can easily cause a decrease in cutting efficiency during the drilling process, thereby delaying the construction period.

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

[0005] The purpose of the present invention is to provide a mining roller drill bit to solve the technical problem in the prior art that the drilling fluid is not flushed properly, resulting in the cut rock chips mixed with mud adhering between the blades on the roller, causing a decrease in cutting efficiency during the drilling process.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a mining roller drill bit is provided, including a tooth palm, a tooth wheel, a connecting head and a chip throwing assembly; the tooth palm is provided with a plurality of tooth claws, and the tooth claws are provided with a shaft neck; the tooth wheel is rotatably mounted on the shaft neck, and the tooth wheel is provided with a mounting position; the connecting head is provided on the tooth palm for connecting with the drilling rod; the chip throwing assembly is installed on the mounting position; wherein, the chip throwing assembly includes a fixed ring body, a force transmission part, a telescopic part and a chip throwing part; the fixed ring body is installed on the mounting position, and the fixed ring body is provided with a plurality of A through slot group includes a first slot, a second slot and a connecting slot, the first slot is connected to the second slot through the connecting slot; a force transmission part is movably arranged in the connecting slot; a telescopic part is movably arranged in the first slot, for pushing the force transmission part to move along the connecting slot when the telescopic part contacts the rock wall and retracts into the first slot; a chip throwing part is rotatably arranged in the second slot, for rotating and throwing away mud and rock chips near the chip throwing part when the force transmission part moves along the connecting slot.

[0007] In combination with the above technical solution, in a possible implementation method, the telescopic part includes a fixed sleeve, a telescopic head and a first elastic member, the fixed sleeve is connected to the inner wall of the first hole groove, one end of the telescopic head extends out of the fixed sleeve, and the other end is sleeved with the first elastic member, a first stop block is provided in the first hole groove, one end of the first elastic member is against the first stop block, and the other end is against the bottom wall of the fixed sleeve.

[0008] In combination with the above technical solution, in a possible implementation method, the chip throwing part includes a rotating sleeve, a chip throwing head, a lifting column and a second elastic member, the rotating sleeve is connected to the inner wall of the second hole groove, 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 member is sleeved on the lifting column, a second stop block is provided in the second hole groove, one end of the second elastic member is against the second stop block, and the other end is against the bottom wall of the rotating sleeve.

[0009] In combination with the above technical solution, in a possible implementation method, the thrust structure includes a thrust cylinder and a force-bearing column, the thrust cylinder is arranged at one end of the lifting column, and the force-bearing column is arranged at one end of the chip removal head. The inner surface of the thrust cylinder is provided with a threaded protrusion, and the outer surface of the force-bearing column is provided with a threaded groove matching the threaded protrusion. The force-bearing column is inserted into the thrust cylinder, and the threaded protrusion is located in the threaded groove, so as to drive the chip removal head to rotate when the lifting column is raised or lowered.

[0010] In combination with the above technical solution, in a possible implementation, the force transmission part includes a transverse column, one end of the transverse column is provided with a first inclined surface, and the other end is provided with a second inclined surface, one end of the telescopic head is provided with a third inclined surface, and the third inclined surface is abutted against the first inclined surface, and one end of the lifting column is provided with a fourth inclined surface, and the fourth inclined surface is abutted against the second inclined surface, so that when the telescopic head is retracted into the first hole, the transverse column can be pushed to move, so that the transverse column pushes the lifting column to rise.

[0011] In combination with the above technical solution, in a possible implementation, a plurality of chip-flinging paddles are provided at one end of the chip-flinging head, and a chip-flinging groove is formed between two adjacent chip-flinging paddles.

[0012] In combination with the above technical solution, in a possible implementation, the chip throwing part is further provided with a hydraulic drive structure, the hydraulic drive structure comprising a rubber sleeve and an impact hole, the rubber sleeve is sleeved on the outer circumference of the thrust cylinder, the outer circumference of the rubber sleeve is in contact with the inner wall of the rotating sleeve, and the impact hole is provided on the bottom wall of the chip throwing head and communicates with the chip throwing groove; A water filter assembly is also provided in the impact hole, and the water filter assembly includes an upper support plate, a lower support plate and a water filter pipe. The upper support plate is provided on one side of the impact hole, and the lower support plate is provided on the other side of the impact hole. The water filter pipe is fixedly connected to the impact hole, and one end of the water filter pipe is connected to the upper support plate, and the other end is connected to the lower support plate. The lower support plate is provided with a flow hole, and the flow hole is communicated with the water filter pipe. The water filter pipe extends out of the impact hole, and the water filter pipe is provided with a water filter hole at one end close to the upper support plate.

[0013] In combination with the above technical solution, in a possible implementation method, a plurality of impact knife groups are provided on the cone, and the impact knife group includes an impact cylinder, an impact head and an impact assembly, and the impact cylinder is arranged in the mounting groove of the cone; the impact head is movably arranged in the impact cylinder, and the top end of the impact head extends out of the impact cylinder and is higher than the blade on the cone; the impact assembly is arranged in the impact cylinder to provide impact force to the impact head when the impact head contacts the rock wall.

[0014] In combination with the above technical solution, in a possible implementation, a third elastic member, a moving block and a fourth elastic member are provided in the impact cylinder, and the moving block is movably arranged in the impact cylinder. One end of the third elastic member is against the moving block, and the other end is against the impact head. One end of the fourth elastic member is against the moving block, and the other end is against the bottom wall of the impact cylinder. A punch head is rotatably provided on the impact head, and the punch head is against the abutment position on the moving block and can enter the through groove of the moving block by rotation.

[0015] In combination with the above technical solution, in a possible implementation method, the punch part includes a punch seat, a torsion spring and a punch head, the punch seat is arranged at the end of the punch head, the punch head is hinged to the punch seat through a hinge shaft, and the end of the punch head is hemispherical, the torsion spring is mounted on the hinge shaft, one end of the torsion spring is against the punch seat, and the other end is against the punch head.

[0016] The beneficial effect of the mining roller drill bit provided by the present invention is that: compared with the prior art, the present invention provides a chip throwing assembly on the mounting position of the roller, and the chip throwing assembly includes a fixed ring body, a force transmission part, a telescopic part and a chip throwing part. When the mining roller drill bit provided by this invention starts to work, the roller starts to rotate. During this process, the telescopic part will contact the rock wall, be pressed into the first hole groove by the rock wall, and push the force transmission part to move. When the force transmission part moves, it will push the chip throwing part to rotate. The chip throwing part can cooperate with the drilling fluid through rotation to disperse the rock chips and mud adhering to the blades, avoid congestion between the blades, and thus improve the cutting efficiency during the drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a mining roller drill bit provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a cone of a mining cone drill bit provided by an embodiment of the present invention, in which an impact assembly and a mounting position are provided; Figure 3 A schematic structural diagram of a mining cone drill bit provided by an embodiment of the present invention, in which an impact assembly and a chip ejection assembly are provided on the cone; Figure 4 A schematic structural diagram of a fixed ring body of a mining roller drill bit provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a through groove group of a mining roller drill bit provided by an embodiment of the present invention; Figure 6 A schematic structural diagram of a telescopic portion, a force transmission portion, and a chip removal portion of a mining roller drill bit provided by an embodiment of the present invention; Figure 7 for Figure 6 sectional view of Figure 8 A schematic structural diagram of a force transmission portion of a mining roller drill bit provided by an embodiment of the present invention; Figure 9 A schematic structural diagram of a water filter assembly for a mining roller drill bit provided by an embodiment of the present invention; Figure 10 A schematic structural diagram of an impact cutter assembly of a mining roller drill bit provided by an embodiment of the present invention; Figure 11 A cross-sectional view of an impact cutter assembly of a mining roller drill bit provided by an embodiment of the present invention; Figure 12 An exploded view of an impact cutter assembly of a rotary drill bit for mining provided by an embodiment of the present invention; Figure 13 A schematic structural diagram of a punch portion of a mining roller drill bit provided in an embodiment of the present invention.

[0019] Among them, the reference numerals in the figures are as follows: 100, tooth palm; 200, tooth claw; 300, gear; 310, mounting position; 400, connector; 500, chip removal assembly; 510, fixed ring; 511, first hole; 5111, first stopper; 512, second hole; 5121, second stopper; 513, connecting groove; 520, force transmission part; 521, first inclined surface; 522, second inclined surface; 530, telescopic portion; 531, fixed sleeve; 532, telescopic head; 5321, third inclined surface; 533, first elastic member; 540, chip removal portion; 541, rotating sleeve; 5411, rotating ring; 542, chip removal head; 5421, chip removal pick; 543, lifting column; 5431, fourth inclined surface; 544, second elastic member; 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 blade assembly; 610, impact cylinder; 620, punch head; 630, punch assembly; 631, third elastic member; 632, fourth elastic member; 633, moving block; 6331, through slot; 6332, abutment position; 640, punch head; 641, punch seat; 642. Torsion spring; 643. Punch. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the described embodiments are only part of the embodiments of this application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

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

[0022] When an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] The directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. The terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate the directions or positional relationships based on the directions or positional relationships 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 direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below 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 spatially relative descriptions used herein are 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 quantity of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0026] A novel mining cone 300 drill bit provided by the present invention is now described.

[0027] like Figure 1As shown, a mining roller drill bit provided by the present invention includes a tooth palm 100, a tooth wheel 300, a connector 400 and a chip throwing assembly 500; the tooth palm 100 is provided with a plurality of tooth claws 200, and the tooth claws 200 are provided with a shaft neck; the tooth wheel 300 is rotatably mounted on the shaft neck, and the tooth wheel 300 is provided with a mounting position 310; the connector 400 is provided on the tooth palm 100 for connecting with the drilling rod; the chip throwing assembly 500 is installed on the mounting position 310; wherein, the chip throwing assembly 500 includes a fixed ring body 510, a force transmission part 520, a telescopic part 530 and a chip throwing part 540; the fixed ring body 510 is installed on the mounting position 310, and the fixed ring body 510 is installed on the mounting position 310. There are several through groove groups on it, which 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 part 520 is movably arranged in the connecting groove 513; the telescopic part 530 is movably arranged in the first hole groove 511, so as to push the force transmission part 520 to move along the connecting groove 513 when the telescopic part 530 contacts the rock wall and retracts into the first hole groove 511; the chip disposal part 540 is rotatably arranged in the second hole groove 512, so as to rotate and throw away the mud and rock chips near the chip disposal part 540 when the force transmission part 520 moves along the connecting groove 513.

[0028] The present invention provides a mining roller drill bit. Compared with the prior art, the present invention has a thread engraved on the roller 300 (such as Figure 2 As shown), a mounting position 310 is formed, so that a chip throwing assembly 500 can be installed on the mounting position 310. The chip throwing assembly 500 includes a fixed ring body 510, a force transmission part 520, a telescopic part 530 and a chip throwing part 540. When a mining roller drill bit provided by this invention starts to work, the roller 300 starts to rotate. During this process, the telescopic part 530 will contact the rock wall and be pressed into the first hole groove 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 chip throwing part 540 to rotate. The chip throwing part 540 can cooperate with the drilling fluid by rotating to disperse the rock chips and mud adhering to the blades, avoid congestion between the blades, and thus improve the cutting efficiency during the drilling process.

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

[0030] Specifically, the first groove 511 and the fixed sleeve 531 are provided with matching threads, and the two are threadedly connected, or the two can also be connected by welding. When the gear 300 starts to rotate, the telescopic head 532 will contact the rock wall and be pushed into the first groove 511 by the rock wall. During this process, the first elastic member 533 is continuously compressed. When the telescopic head 532 no longer contacts the rock wall, the elastic force of the first elastic member 533 is instantly released, and the telescopic head 532 is quickly reset. During the resetting process, the telescopic head 532 will impact the drilling fluid near it, causing it to flow faster, which also plays a certain preventive role in preventing rock cuttings and mud from adhering between the blades.

[0031] like Figure 6 and Figure 7 As shown, in a specific embodiment of a mining roller drill bit provided by an embodiment of the present invention, the chip throwing part 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 hole groove 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 block 5121 is provided in the second hole groove 512. One end of the second elastic member 544 is against the second stop block 5121, and the other end is against the bottom wall of the rotating sleeve 541.

[0032] It should be noted that the second hole groove 512 and the rotating sleeve 541 are provided with matching threads, and the two are threadedly connected, or the two can also 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 chip throwing head 542 to rotate. At the same time, the second elastic member 544 is continuously compressed. When the telescopic head 532 is reset, the elastic force of the second elastic member 544 is instantly released, pushing the lifting column 543 down to reset. At the same time, the thrust structure can also drive the chip throwing head 542 to rotate in the opposite direction again. Through the two rotations of the chip throwing head 542, the flow rate of the drilling fluid between the blades on the cone 300 can be greatly accelerated, avoiding the accumulation of rock cuttings and mud. The first elastic member 533 and the second elastic member 544 can be selected as springs, elastic bands or elastic ropes, etc., preferably springs.

[0033] like Figure 7As shown, in a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, the thrust structure includes a thrust cylinder 545 and a force column 546. The thrust cylinder 545 is arranged at one end of the lifting column 543, and the force column 546 is arranged at one end of the chip rejection head 542. The inner surface of the thrust cylinder 545 is provided with a threaded protrusion 5451, and the outer surface of the force column 546 is provided with a threaded groove 5461 matching the threaded protrusion 5451. The force column 546 is inserted into the thrust cylinder 545, and the threaded protrusion 5451 is located in the threaded groove 5461, so as to drive the chip rejection head 542 to rotate when the lifting column 543 is raised or lowered.

[0034] Here, when the lifting column 543 rises, it will drive the thrust cylinder 545 to rise together. During the rising process, since the chip throwing head 542 can only rotate and cannot be lifted and lowered, the threaded protrusion 5451 on the inner surface of the thrust cylinder 545 continues to enter the threaded groove 5461 on the outer surface of the force column 546 and drive it to rotate; when the lifting column 543 descends, it will drive the thrust cylinder 545 to descend together, so that the threaded protrusion 5451 continues to 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 a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, the force transmission part 520 includes a transverse column, one end of the transverse column is provided with a first inclined surface 521, and the other end is provided with a second inclined surface 522, one end of the telescopic head 532 is provided with a third inclined surface 5321, and the third inclined surface 5321 is abutted against the first inclined surface 521, and one end of the lifting column 543 is provided with a fourth inclined surface 5431, and the fourth inclined surface 5431 is abutted against the second inclined surface 522, so that when the telescopic head 532 is retracted into the first hole groove 511, the transverse column can be pushed to move, so that the transverse column pushes the lifting column 543 to rise.

[0036] Specifically, when the telescopic head 532 is retracted into the fixed sleeve 531, the third inclined surface 5321 will also move downward, thereby pushing the first inclined surface 521 to move, and then driving the entire transverse column to move. When the transverse 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 a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, a plurality of chip-flinging paddles 5421 are provided at one end of a chip-flinging head 542 , and a chip-flinging groove is formed between two adjacent chip-flinging paddles 5421 .

[0038] Here, when a mining roller drill bit provided by this invention starts drilling, a large amount of drilling fluid will be sprayed out. A large amount of drilling fluid will enter the contact surface between the roller 300 and the rock wall and enter the chip trough, where a large amount of mud and rock chips will also gather. When the lifting column 543 rises, the chip paddle 5421 will rotate in the forward direction to initially throw the mud and rock chips in the chip trough out of the chip trough. When the lifting column 543 descends, the chip paddle 5421 will rotate in the reverse direction again to completely throw the mud and rock chips remaining in the chip trough out of the chip trough. Through the two rotations of the chip paddle 5421 in different directions, the mud and rock chips in the chip trough can be fully thrown out of the chip trough, and the flow of drilling fluid can be accelerated, reducing the probability of mud and rock chips adhering to the blades on the roller 300.

[0039] like Figure 7 and Figure 9 As shown, in a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, the chip throwing part 540 is also 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, and the impact hole 548 is provided on the bottom wall of the chip throwing head 542 and is communicated with the chip throwing groove.

[0040] It should be noted that during the drilling process, a large amount of drilling fluid will enter the interior of the rotating sleeve 541 through the impact hole 548. When the lifting column 543 rises rapidly, it will drive the rubber sleeve 547 on the thrust cylinder 545 to rise together, thereby pushing a large amount of drilling fluid inside the rotating sleeve 541 to be quickly ejected from the impact hole 548. The impact hole 548 is connected to the chip chute, which can further flush away the mud and rock chips in the chip chute. At the same time, the ejected drilling fluid can also further accelerate the flow rate of the drilling fluid near it, so that the mud and rock chips no longer adhere to the blades on the gear 300, thereby improving the cutting efficiency.

[0041] A water filter assembly 550 is also provided in 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 arranged on one side of the impact hole 548, and the lower support plate 552 is arranged on the other side of the impact hole 548. The water filter pipe 553 is fixedly connected to 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, and the flow hole 5521 is communicated 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 close to the upper support plate 551 is provided with a water filter hole 5531.

[0042] Among them, when the lifting column 543 rises rapidly, it will drive the rubber sleeve 547 on the thrust cylinder 545 to rise together, 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 spraying it out through the water filter hole 5531; when the lifting column 543 falls rapidly, it will drive the rubber sleeve 547 on the thrust cylinder 545 to fall together, thereby drawing a large amount of drilling fluid near the chip chute into the water filter pipe 553 through the water filter hole 5531, and 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 rock cuttings from entering the rotating sleeve 541.

[0043] like Figure 10 、 11 and Figure 12 As shown, in a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, a plurality of impact knife groups 600 are provided on the roller 300, and the impact knife group 600 includes an impact cylinder 610, an impact head 620 and an impact assembly 630. The impact cylinder 610 is arranged in the installation groove of the roller 300; the impact head 620 is movably arranged 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 blade on the roller 300; the impact assembly 630 is arranged in the impact cylinder 610 to provide impact force to the impact head 620 when the impact head 620 contacts the rock wall.

[0044] Specifically, when the impact cylinder 610 needs to be installed in the installation groove, a thread is provided on the outer circumference of the impact cylinder 610, and a matching thread is provided in the installation groove. The impact cylinder 610 can be installed by simply rotating the impact cylinder 610. When the mining roller drill bit provided by this invention starts drilling, the roller 300 starts to rotate. Since the punch head 620 is higher than the height of the blade, the punch head 620 first contacts the rock wall. Under the pressure of the rock wall, the punch head 620 will retract into the punch cylinder 610. When the punch head 620 retracts a certain distance into the punch cylinder 610, the punch assembly 630 will give the punch head 620 a force to quickly extend it out of the punch cylinder 610 and impact the rock wall. The rock wall becomes broken under the action of the impact force, which makes it more convenient for the blade to cut the rock wall in the subsequent process.

[0045] like Figure 10 、 11 and Figure 12As shown, in a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, a third elastic member 631, a moving block 633 and a fourth elastic member 632 are provided in the impact cylinder 610, and the moving block 633 is movably arranged in the impact cylinder 610. One end of the third elastic member 631 is abutted against the moving block 633, and the other end is abutted against the impact head 620. One end of the fourth elastic member 632 is abutted against the moving block 633, and the other end is abutted against the bottom wall of the impact cylinder 610. A punch head 640 is rotatably provided on the impact head 620, and the punch head 640 is abutted against the abutment position 6332 on the moving block 633, and can enter the through groove 6331 of the moving block 633 by rotation.

[0046] Here, when the gear 300 is rotating, the punch head 620 will contact the rock wall. Under the top force of the rock wall, the punch head 620 will retract into the punch cylinder 610 for a distance, thereby compressing the third elastic member 631. During the retraction process of the punch head 620, the punch head 640 on the punch head 620 will continue to push the moving block 633 to compress the fourth elastic member 632. When compressed to a certain extent, the punch head 640 rotates and enters the through groove 6331 of the moving block 633. During this period, the fourth elastic member 632 will not be affected by the moving block 633. The fourth elastic member 632 releases its elastic force immediately when the movable block 633 is applied, pushing the movable block 633 to reset. The bottom wall of the through slot 6331 of the movable block 633 contacts the punch head 640, giving the punch head 620 a huge force to shift outward. At the same time, when the punch head 620 moves outward, the third elastic member 631 also releases its elastic force, giving the punch head 620 another force to shift outward. Finally, under the combined force, the punch head 620 breaks the rock wall. The third elastic member 631 and the fourth elastic member 632 can be selected as springs, elastic bands or elastic ropes, etc., preferably springs.

[0047] like Figure 13 As shown, in a specific implementation of a mining roller drill bit provided by an embodiment of the present invention, the punch head 640 includes a punch seat 641, a torsion spring 642 and a punch member 643. The punch seat 641 is arranged at the end of the punch head 620, and the punch member 643 is hinged to the punch seat 641 through a hinge shaft, and the end of the punch member 643 is hemispherical. The torsion spring 642 is sleeved on the hinge shaft, and one end of the torsion spring 642 is against the punch seat 641, and the other end is against the punch member 643; because one end of the torsion spring 642 is against the punch seat 641, and the other end is against the punch member 643, the punch member 643 maintains an inclined state under the action of the torsion spring 642.

[0048] When the punch 643 is in an inclined state, the end of the punch 643 will abut against the abutment position 6332 on the moving block 633. When the punch head 620 starts to compress the third elastic member 631, the punch 643 installed on the punch head 620 starts 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 will gradually break away from the abutment position 6332 and eventually fall into the through groove 6331 of the moving block 633. At this time, the fourth The elastic member 632 will not be affected by the force of the moving block 633. The fourth elastic member 632 immediately releases its elastic force, pushing the moving block 633 to reset. The bottom wall of the through slot 6331 of the moving block 633 contacts the end of the punch head 620, giving the punch head 620 a huge outward displacement force. At the same time, when the punch head 620 moves outward, the third elastic member 631 will also release its elastic force, giving the punch head 620 another outward displacement force. Finally, under the combined force, the punch head 620 breaks the rock wall.

[0049] The above are only 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 in the scope of protection of the present invention.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" 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 of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

Claims

1. A mining roller drill bit, characterized in that: include: The tooth palm (100) is provided with a plurality of tooth claws (200), and the tooth claws (200) are provided with a journal; A cone (300) is rotatably mounted on the shaft neck, and a mounting position (310) is provided on the cone (300); A connecting head (400) is provided on the tooth palm (100) and is used for connecting to a drilling rod; A chip removal assembly (500) is mounted on the mounting position (310); Wherein, the chip removal assembly (500) comprises: A fixed ring body (510) is installed on the installation position (310), and a plurality of through-grooves are provided on the fixed ring body (510), wherein the through-grooves include a first hole groove (511), a second hole groove (512), and a connecting groove (513), and the first hole groove (511) is connected to the second hole groove (512) through the connecting groove (513); A force transmission portion (520) movably disposed in the connecting groove (513); a telescopic portion (530) movably disposed in the first hole (511) for pushing the force transmission portion (520) to move along the connecting groove (513) when the telescopic portion (530) contacts the rock wall and retracts into the first hole (511); The chip-stripping portion (540) is rotatably disposed in the second hole (512) and is used to rotate and throw away mud and rock chips near the chip-stripping portion (540) when the force transmission portion (520) moves along the connecting groove (513).

2. The mining roller drill bit according to claim 1, characterized in that: The telescopic portion (530) comprises a fixed sleeve (531), a telescopic head (532) and a first elastic member (533); the fixed sleeve (531) is connected to the inner wall of the first hole (511); one end of the telescopic head (532) extends out of the fixed sleeve (531), and the other end is sleeved with the first elastic member (533); a first stopper (5111) is provided in the first hole (511); one end of the first elastic member (533) abuts against the first stopper (5111), and the other end abuts against the bottom wall of the fixed sleeve (531).

3. The mining roller drill bit according to claim 2, characterized in that: The chip-flinging portion (540) comprises a rotating sleeve (541), a chip-flinging 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 hole groove (512); a rotating ring (5411) is rotatably provided on the rotating sleeve (541); the chip-flinging head (542) is connected to the rotating ring (5411), and the end of the chip-flinging head (542) extends out of the rotating ring (5411); the chip-flinging head (542) and the lifting column (543) are connected via a thrust structure; the second elastic member (544) is sleeved on the lifting column (543); a second stopper (5121) is provided in the second hole groove (512); one end of the second elastic member (544) abuts against the second stopper (5121), and the other end abuts against the bottom wall of the rotating sleeve (541).

4. The mining roller drill bit according to claim 3, characterized in that: The thrust structure includes a thrust cylinder (545) and a force-bearing column (546), wherein the thrust cylinder (545) is arranged at one end of the lifting column (543), and the force-bearing column (546) is arranged at one end of the chip-stripping head (542). The inner surface of the thrust cylinder (545) is provided with a threaded protrusion (5451), and the outer surface of the force-bearing column (546) is provided with a threaded groove (5461) matching the threaded protrusion (5451). The force-bearing column (546) is inserted into the thrust cylinder (545), and the threaded protrusion (5451) is located in the threaded groove (5461), so as to drive the chip-stripping head (542) to rotate when the lifting column (543) is raised or lowered.

5. The mining roller drill bit according to claim 4, characterized in that: The force transmission part (520) includes a transverse column, one end of the transverse column is provided with a first inclined surface (521), and the other end is provided with a second inclined surface (522); one end of the telescopic head (532) is provided with a third inclined surface (5321), and the third inclined surface (5321) is abutted against the first inclined surface (521); one end of the lifting column (543) is provided with a fourth inclined surface (5431), and the fourth inclined surface (5431) is abutted against the second inclined surface (522), so that when the telescopic head (532) is retracted into the first hole (511), the transverse column can be pushed to move, so that the transverse column pushes the lifting column (543) to rise.

6. The mining roller drill bit according to claim 5, characterized in that: One end of the chip-flinging head (542) is provided with a plurality of chip-flinging paddles (5421), and a chip-flinging groove is formed between two adjacent chip-flinging paddles (5421).

7. The mining roller drill bit according to claim 4, characterized in that: The chip-stripping portion (540) is further provided with a hydraulic drive structure, the hydraulic drive structure comprising a rubber sleeve (547) and an impact hole (548), the rubber sleeve (547) being sleeved on the outer peripheral surface of the thrust cylinder (545), the outer peripheral surface of the rubber sleeve (547) being in contact with the inner wall of the rotating sleeve (541), the impact hole (548) being provided on the bottom wall of the chip-stripping head (542) and communicating with the chip-stripping groove; A water filter assembly (550) is also provided in the impact hole (548), and the water filter assembly (550) comprises an upper support plate (551), a lower support plate (552), and a water filter pipe (553). The upper support plate (551) is provided on one side of the impact hole (548), and the lower support plate (552) is provided on the other side of the impact hole (548). The water filter pipe (553) is fixedly connected to 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), and the flow hole (5521) is communicated with the water filter pipe (553). The water filter pipe (553) extends out of the impact hole (548), and a water filter hole (5531) is provided at one end of the water filter pipe (553) close to the upper support plate (551).

8. The mining roller drill bit according to claim 1, wherein: The gear (300) is provided with a plurality of impact knife groups (600), the impact knife group (600) includes an impact cylinder (610), an impact head (620) and an impact assembly (630), the impact cylinder (610) is arranged in the installation groove of the gear (300); the impact head (620) is movably arranged 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 blade on the gear (300); the impact assembly (630) is arranged in the impact cylinder (610) to provide impact force to the impact head (620) when the impact head (620) contacts the rock wall.

9. The mining roller drill bit according to claim 8, characterized in that: The punch assembly (630) includes a third elastic member (631), a moving block (633) and a fourth elastic member (632). The moving block (633) is movably arranged in the punch cylinder (610). One end of the third elastic member (631) is against the moving block (633), and the other end is against the punch head (620). One end of the fourth elastic member (632) is against the moving block (633), and the other end is against the bottom wall of the punch cylinder (610). A punch head (640) is rotatably provided on the punch head (620). The punch head (640) is against the abutment position (6332) on the moving block (633) and can enter the through slot (6331) of the moving block (633) by rotation.

10. The mining roller drill bit according to claim 9, characterized in that: The punch portion (640) comprises a punch seat (641), a torsion spring (642) and a punch head (620), wherein the punch seat (641) is arranged 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) is against the punch seat (641), and the other end is against the punch head (620).

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