1395results about "Drill bits" patented technology

In one aspect of the present invention, a drill string has a drill bit with a body intermediate a shank and a working face. The working face has a plurality of blades converging at a center of the working surface and diverging towards a gauge of the working face. At least one blade has a cutting element with a carbide substrate bonded to a diamond working end with a pointed geometry. The diamond working end also has a central axis which intersects an apex of the pointed geometry. The axis is oriented between a 25 and 85 degree positive rake angle.

The disclosure describes an expanding drill device for expanding a pilot bore by moving the expanding drill device along a specified drilling line comprising: a housing; a drill head that has a cutting wheel which is arranged on the drill side of the expanding drill device so as to be rotatably mounted and driven about a rotational axis and relative to the housing and on which at least one drill tool for loosening the ground or the rock is arranged; and a drill-side connection for producing a connection to a pipe section located in the pilot bore on the drill side, wherein the drill side centrally has at least one receiving chamber for the loosened ground or the loosened rock, said receiving chamber being connected to a material conveyor device of the expanding drill device.

The invention belongs to the field of drilling, and particularly relates to a large-diameter cluster type pneumatic down-the-hole hammer raise-boring reamer bit and a drilling method.The bit comprises a center pipe, a cluster body, an air chamber, a down-the-hole hammer, a synchronous check valve, an air chamber pressure balance control assembly and a concave slag falling channel and is used for transmitting torque and rotating speed and conveying high-pressure air; the top of the central pipe is sleeved with a flange used for being connected with a drill rod, the central pipe is sequentially sleeved with a front guide wing plate, an upper fixing plate, a middle plate, a high-frequency rear seat, an air chamber peripheral cylinder and an air chamber lower cover plate in the extending direction of the central pipe, and the front guide wing plate, the upper fixing plate, the middle plate, the high-frequency rear seat, the air chamber lower cover plate and the central pipe jointly form a cluster body; two ends of the air chamber peripheral cylinder are respectively connected with the high-frequency rear seat and the air chamber lower cover plate to form an air chamber; according to the drill bit, the multiple down-the-hole hammers are integrated through the cluster body, efficient rock breaking and continuous slag discharging are achieved in combination with air chamber energy gathering, synchronous check valve control and a concave slag falling channel, and the drilling efficiency is improved by more than 10 times.

The invention relates to the technical field of mixing pile machines, in particular to a two-way mixing drill bit structure for a mixing pile machine and a construction method.The two-way mixing drill bit structure comprises a sleeve body, and multiple sets of sleeve holes are formed in the outer wall of the sleeve body; a rotary shaking mechanism is arranged in the sleeve body, and an air injection blowing mechanism and a bidirectional rotating mechanism are arranged on the sleeve body; the rotary shaking mechanism comprises sliding grooves formed in the inner wall of the sleeve body and corresponding to the two sides of the sleeve hole, the inner wall of each sliding groove is slidably connected with a lifting plate, a spring is fixedly connected to the position, corresponding to the interior of the corresponding sliding groove, of one end of the outer side of each lifting plate, and each spring is fixedly connected with the corresponding sliding groove. According to the device, a lifting plate can move inwards and outwards, so that a pushing column is driven to do the same movement, soil in a sleeve hole is pushed away, the sleeve hole is prevented from being blocked by the soil, and the flowability of the sleeve hole is guaranteed.

The invention relates to the technical field of drilling engineering, and discloses an impact-assisted rock breaking inwards-concave PDC drill bit which comprises a drill bit body and an impact structure, and the drill bit body is provided with an inner cavity and a first transmission protrusion arranged at the head of the drill bit body; the impact structure comprises a turbine, a transmission shaft and an impact blade, the turbine is arranged in the inner cavity of the drill bit body, the impact blade is arranged outside the drill bit body, the transmission shaft is connected between the impact blade and the turbine and provided with a second transmission protrusion, and the turbine is used for driving the transmission shaft to rotate; the second transmission protrusion and the first transmission protrusion abut against each other or are staggered in the rotating process. The impact cutter wings are used for stretching out relative to the drill bit body when the second transmission protrusions abut against the first transmission protrusions; a reset spring is further arranged between the transmission shaft and the drill bit body and used for driving the impact blades to reset when the second transmission protrusions and the first transmission protrusions are staggered. The high-frequency axial reciprocating motion of the impact blades directly crushes the center area of the drill bit, and the rock breaking efficiency of the center area of the drill bit is improved.

The utility model relates to the field of drilling tools for wells, in particular to a self-adaptive rotary steering drilling tool which comprises a drill bit body and a damping column, a plurality of blades are sequentially arranged on the crown portion of the drill bit body in the circumferential direction, the cutting faces of the blades are fixedly connected with a plurality of cutting teeth, and mounting holes are formed in the outer side faces of the blades. Steel sleeves are fixedly arranged in the mounting holes, the damping columns are movably inserted in the steel sleeves, the ends, located in the steel sleeves, of the damping columns are fixedly connected with connecting bases, adjusting plates are arranged between the connecting bases and the bottoms of the steel sleeves, and outer-layer low-rigidity spiral springs are connected between the adjusting plates and the connecting bases. An inner layer high-rigidity conical spring is arranged on the inner side of the outer layer low-rigidity spiral spring, and an adjusting assembly for adjusting the adjusting plate and the bottom of the steel sleeve is arranged on the steel sleeve. The drill bit can better adapt to different pressure requirements, and the drill bit is prevented from bearing overlarge impact force, so that the cutting teeth are protected, and the service life of the drill bit is prolonged.

The utility model discloses a geological drilling coring device which comprises a frame body, a placing table is installed on the upper portion of the frame body in a sliding mode, a motor is connected to the upper portion of the placing table through bolts, the motor is connected with a transmission shaft through a belt, a coring barrel is fixedly connected to the bottom of the transmission shaft, and a drill bit is fixedly connected to the bottom of the coring barrel. A cutting-off structure is arranged in the coring barrel and comprises a cavity and a first gear, a sliding block is slidably installed in the cavity, a rack is fixedly installed on the upper portion of the sliding block, a second gear is rotatably installed in the cavity, the second gear is connected with the rack in a meshed mode, and a double-face gear ring is rotatably installed at the upper position in the cavity. The double-face gear ring is connected with the second gear in a meshed mode, the double-face gear ring is connected with the first gear in a meshed mode, and a rotating shaft is fixedly installed at the top of the first gear. According to the geological drilling coring device disclosed by the utility model, a required core sample can be completely stored in the device.

A milling bit is disclosed for debris collection within a wellbore. A check valve can be part of a debris removal tool that includes a motor, a pump, a gearbox, a bailer, the milling bit, and rotational shafts. In an example, on its uphole end, the milling bit can be coupled with the check valve. On its downhole end, the milling bit can be configured for debris removal with cutting edges. The downhole end can also include openings that provide access to an internal cavity of the milling bit. The internal cavity can extend the entire length of the milling bit. This allows the pump to pull drilling fluid into the bailers through the milling bit and check valve. As a result, the debris removal tool can simultaneously remove obstructions in a wellbore and collect debris from the obstruction removal.

The utility model discloses a rotary excavating reamer for a cast-in-place pile, and particularly relates to the technical field of engineering reaming equipment. The rotary excavating reamer for the cast-in-place pile comprises a connecting shaft, a driving box is arranged at the bottom end of the connecting shaft, a base is fixedly connected to the bottom of the driving box, a conical drill bit used for rotary excavating of the cast-in-place pile is fixedly connected to the bottom of the base, a plurality of rotating discs are rotationally connected to the base, and a positioning block is fixedly connected to each rotating disc. A tool apron is movably connected to the positioning block, and a reaming tool is fixedly connected to the tool apron. And a plurality of transmission connecting pieces are arranged in the driving box, the transmission connecting pieces are movably connected with the positioning blocks, and a driving mechanism is arranged in the driving box and used for driving the transmission connecting pieces to rotate so as to drive the reaming cutter to achieve angle adjustment. The utility model solves the problems that the linkage property of the reamer is insufficient in the process of adjusting the hole diameter of a reaming hole, and the assembly efficiency of the reaming piece is low in the disassembly and assembly process.

A method and a device for machining an elongated workpiece having a shaft extending in the direction of the workpiece longitudinal axis forms at least one groove with a defined groove surface on the workpiece by material removal by a laser beam directed with its beam axis onto the workpiece surface and guided along a laser path extending exclusively parallel to a groove profile curve corresponding to the intersection between the groove surface to be produced and a geometric plane that forms an angle β with the workpiece longitudinal axis, where 90°≥β≥the angle of groove inclination. The distance between the curve and the path is predetermined such that the workpiece material located in the geometric plane on the path side facing away from the curve completely sublimates or vaporizes due to the laser beam power density when the beam is guided along the path.

A method including receiving a three-dimensional scan of a coating that coats an object. The coating and the object, in combination, have a shape. The method also includes flattening the three-dimensional scan to generate flattened data. Flattening includes conforming scan data in the three-dimensional scan to zone data for zones of a layout. The zones represents sections of the shape cut along boundaries in the shape. Each of the zones represents a corresponding thickness of the coating in a corresponding section of the sections. The method also includes vectorizing the flattened data into a vector data structure. The method also includes generating a prediction whether one or more zones of the zones are out of an engineering tolerance for the coating. Generating the prediction is performed by a machine learning model that takes, as input, the vector data structure and produces, as output, the prediction.

Provided is a whipstock and well system. The whipstock, in one aspect, includes a coupling section having a first radius of curvature, the coupling section configured to engage with a mill bit when running in hole. The whipstock, in accordance with this aspect, further includes a casing breakthrough section having a second radius of curvature, and a controlled exit section having a third radius of curvature, wherein the second radius of curvature is less than the third radius of curvature.

The utility model relates to a raking pile rock-socketed percussion drill hole-forming barrel drill bit, which belongs to the technical field of barrel drill bits, and comprises a rock percussion drill hole-forming barrel drill bit body, a rotary drilling machine, a connecting shaft, a flange plate and a bolt, and a reinforcing mechanism is arranged at the top of the rock percussion drill hole-forming barrel drill bit body. The reinforcing mechanism comprises a reinforcing sleeve fixedly installed on the peripheral wall of the connecting shaft. According to the raking pile rock-socketed percussion drill hole-forming barrel drill bit, the overall compressive strength of a connecting shaft is enhanced through the effect of a reinforcing sleeve, a connecting plate is fixed through the effect of an arc-shaped mounting base and a screw, and meanwhile an arc-shaped supporting plate is mounted in the reinforcing sleeve; part of pressure is shared to the rotary drilling machine under the action of the arc-shaped supporting plate, the supporting rod and the connecting plate, the influence of gravity and pressure on the connecting shaft when the drill bit body of the rock impact drill hole-forming barrel drill inclines is reduced, and therefore the service life of the connecting shaft is prolonged, and the stability of the connecting shaft is improved.

The invention belongs to the technical field of PDC drill bits, and particularly relates to a rotatable blade PDC drill bit which comprises a drill bit body. A plurality of supports are fixedly connected to the drill bit body, three inserting grooves are formed in each support, and the three inserting grooves are one long inserting groove and two short inserting grooves. A blade wing is arranged on the support; three fasteners of the same type penetrate through one first inserting block and two second inserting blocks respectively to be connected to the support in a threaded mode, so that the blades are assembled, large torque and impact force can be borne in the drilling process, the blades are not prone to loosening, the multiple blades are installed on the drill bit body in the drilling process, and the drilling efficiency is improved. The multiple blades rotate along with the output end of the drilling machine to drill into a soil rock layer, and rotation of the PDC drill bit blades is achieved. When a certain blade is abraded and damaged, the blade can be conveniently taken down from the support to be replaced only by disassembling the corresponding fastener, the whole drill bit does not need to be disassembled on a large scale, the maintenance cost is greatly reduced, and the maintenance time is greatly shortened.

The invention discloses an autonomous rock-soil body drilling instrument based on the bionic principle and a drilling method thereof.The autonomous rock-soil body drilling instrument comprises a drill bit, a propelling steering mechanism, an anchoring mechanism, an electric control integrated module and a ground control unit, and the drill bit, the propelling steering mechanism and the electric control integrated module are sequentially connected; anchoring mechanisms are arranged between the drill bit and the propelling steering mechanism and between the propelling steering mechanism and the electric control integrated module; the drill bit is used for cutting a rock-soil body and backwards conveying and discharging the cut rock-soil body to the outside of the drill bit; the propulsion steering mechanism is used for driving the drilling instrument to linearly advance and steer; the anchoring mechanism is used for providing counterforce required by drilling or resetting for the drilling instrument through meshing and separation with surrounding rock and soil bodies; and the electric control integrated module is connected with the ground control unit through an integrated communication cable. The device simulates an anchoring-propelling mechanism of natural organisms, realizes autonomous drilling without an external counter-force device, a slurry protection wall and a probe rod, and has the capabilities of multi-directional drilling, active obstacle avoidance and real-time acquisition of a continuous geological section.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an electric control intelligent coring drill bit which comprises a power module and a cutting module, a limiting switch is arranged in the cutting module, the drill bit normally drills, a rock core passes through the interior of the drill bit and enters a coring barrel, and when the top of the rock core in the coring barrel triggers the limiting switch, the limiting switch is switched on. The MCU receives a coring completion signal, the electromagnetic valve is controlled to be opened through the MCU, high-pressure drilling fluid enters a turbine cavity through a mandrel hole, under the action of the high-pressure drilling fluid, the turbine rotates to generate motion and power, the motion and the power are transmitted to the rotating ring through the rotating disc and the rotating sleeve, the rotating ring rotates to push the connecting rod, the connecting rod pushes the evenly-distributed cutting knives, and therefore coring is completed. And the uniformly distributed cutting knives and the coring cylinder form a sealing cavity, the cut rock core is placed in the sealing cavity, and the cut rock core is taken out after pulling out of the drill. The intelligent degree of the drilling coring bit can be effectively improved, and the drilling coring efficiency and success rate are effectively improved.

The invention discloses a variable-diameter drill bit for a rotary jet grouting anchor cable and a construction method, and the variable-diameter drill bit comprises a drill rod, an outer pipe, a jack, an adjustable drill bit and a supporting assembly; the fixed end of the jack is connected to the end of the drill rod, and the movable end of the jack is hinged to one end of the adjustable drill bit. A blade is arranged at the other end of the adjustable drill bit, and the cutting diameter of the adjustable drill bit can be adjusted through the jack; the supporting assembly is arranged on the outer side of the outer pipe. A supporting assembly is arranged on the outer side of the outer pipe, the movable end of the supporting assembly is connected with the adjustable drill bit, and when the adjustable drill bit conducts angle adjustment, the supporting assembly is configured to change the outer diameter of the supporting assembly, so that the hole channel is adaptively supported. The problems that in the prior art, the hole forming diameter of the rotary jet grouting anchor cable is uncontrollable, holes are prone to collapsing under the complex geology, the construction efficiency is low, and the anchor cable failure risk is high are solved, and the technical purposes of precise hole forming of the rotary jet grouting anchor cable and safe and efficient construction are achieved.

The invention belongs to the related technical field of ocean engineering, and discloses a horizontal ice drilling transmission mechanism based on a flexible shaft, which comprises a drill bit assembly, the flexible shaft, a sleeve joint chain, an upper end joint assembly, a lower end joint assembly and a guide pipe, the sleeve joint chain is formed by hinging a plurality of sleeve joints end to end through pin shafts and is accommodated in the guide pipe; a channel used for guiding and restraining the sleeve joint chain is arranged in the guide pipe. The flexible shaft is arranged in an inner cavity of the sleeve joint chain in a penetrating mode. The upper end of the flexible shaft is connected with an external rotation driving device through an upper end connector assembly. The upper end of the sleeve joint chain is connected with an external lifting driving device through an upper end connector assembly. The whole transmission mechanism is compact in structure and small in radial size, the space of a small-diameter vertical ice hole can be fully utilized, and large-depth drilling from the vertical direction to the horizontal direction is achieved; and a more stable and efficient drilling process can be realized, and the requirements of different ice layer hardness and drilling depth are met.

An anti-bouncing-sticking high-stability drill bit for drilling. The drill bit comprises: a drill bit body (1), cutting teeth (3), gauge teeth (4) and a plurality of blades (20), wherein the blades (20) are arranged on the drill bit body (1); each of the blades (20) has a main cutting portion and a gauge portion distributed in a direction from the center of the drill bit to the outside; the cutting teeth (3) are mounted on the main cutting portions; and the gauge teeth (4) are mounted on the gauge portions. The plurality of blades (20) comprise at least two helical blades (2); and in the helical blades (2), a helix angle β is formed between a line connecting a gauge point (51) of the main cutting portion to a gauge end point (61) of the gauge portion and a plane perpendicular to the axis of the drill bit, and satisfies 15°≤β≤60°. The technical problems of poor borehole trajectory quality and difficulty in ensuring wellbore wall quality which are caused by poor stability of the drill bit during the drilling process of the drill bit are solved.

The utility model relates to the technical field of pile foundation construction, in particular to a grading-free integrated drill bit which comprises a mounting shaft, an outer cylinder, a middle cylinder and a righting drill bit are sequentially and fixedly mounted on the outer surface of the mounting shaft from top to bottom, and the diameters of the outer cylinder, the middle cylinder and the righting drill bit are sequentially reduced. According to the grading-free integrated drill bit, the righting drill bit with the small diameter at the front end is firstly used for drilling, loosening the circumference of a rock core in a hole and increasing the free surface of a rock stratum so as to reduce the stress level of the righting drill bit, further drilling of a large-diameter barrel drill is facilitated, the working efficiency of the large-diameter barrel drill is improved, and meanwhile a free surface for rock mass breaking is manufactured for the righting drill bit for middle barrel drilling; the cone on the middle cylinder forms a rock mass crushing free surface for the outer cylinder, and the drill bit sequentially utilizes more than two drill bits to alternately work, so that the free surfaces can be provided mutually, the drilling efficiency is greatly improved, and the rock crushing capability is also improved.

An abrasive article can include a core and an abrasive component attached to the core. The abrasive component may include a body including a leading end and a trailing end, wherein the leading end has a width greater than a width of the trailing end. In an embodiment, the abrasive component may include a body including a first abrasive portion and a second abrasive portion, wherein a radial width of the first abrasive portion is greater than a radial width of the second abrasive portion.

Novel hybrid tunnel boring methods, systems, and apparatuses are described. Example hybrid methods integrate (a) thermal processing, e.g., preconditioning and / or thermal spallation (which may be used as pre-treatment), and (b) mechanical processing while boring tunnels in rock and other formations. Thermal processing and mechanical processing may be used alternatively or simultaneously. For example, the preconditioning may use thermal energy to induce thermal shock and weaken the rock (e.g., cause expansion stress, micro-fractures, thermal spallation, etc.). This preconditioning changes the relevant properties of the rock relative to the additional (e.g., mechanical) excavation, including, among other things, effective compressive stress, abrasion properties, and hardness. This preconditioned rock can therefore be efficiently removed using mechanical drilling tools, resulting in, for example, faster boring speeds, reduced tool wear, enhanced precision, and longer deployment lengths (e.g., in comparison to conventional TBM and especially MTBM approaches).

The invention relates to underground enclosure grouting reinforcement equipment and a reinforcement process, and relates to the technical field of grouting reinforcement, the underground enclosure grouting reinforcement equipment comprises a drilling machine, a drilling rod is installed in the drilling machine, a drill bit and a feeding pipe are installed at the two ends of the drilling rod respectively, and the spraying angle of a discharging pipe can be accurately controlled underground through a gear and rack transmission mechanism; therefore, the grout can be sprayed to a specific soil layer or crack needing to be reinforced in a targeted mode, accurate striking and local strengthening of soft and loose areas are achieved, blind flowing and waste of the grout in non-target areas are greatly reduced, the grout wastage rate is effectively reduced, the reinforcing effect is guaranteed, meanwhile, grouting materials are saved, and the grouting cost is reduced. And the construction cost is reduced.

The invention discloses an expansion pin assembly for a split reamer bit, the split reamer bit and an assembling method. The expansion pin assembly for the split type reamer bit comprises an expansion pin shaft sleeve, an expansion pin bolt and an expansion pin nut. An expansion head is arranged at one end of the expansion pin shaft sleeve, a first circular truncated cone through hole is formed in the expansion head, and the hole wall surface of the first circular truncated cone through hole is a first circular truncated cone surface; a locking head is arranged at one end of the expansion pin bolt, and the outer surface of the locking head is a second circular truncated cone face matched with the first circular truncated cone face. And when the expansion pin bolt is completely inserted into the expansion pin shaft sleeve, the second circular truncated cone surface is tightly attached to the first circular truncated cone surface. According to the expansion pin assembly, through the self-locking effect between the first circular truncated cone face and the second circular truncated cone face, the loosening phenomenon in the construction process can be effectively prevented, mechanical self-locking is achieved, an anti-loosening device such as a locking nut or a cotter pin does not need to be additionally arranged, and the connection reliability is greatly improved.

The application provides a device for cutting soil in-situ in a borehole and a method for using the same. The device comprises a base, a cavity is arranged in the base; a cutting mechanism is arranged on the base, the cutting mechanism comprises a driven driving part arranged in the cavity and a cutting part located at the opposite end of the driven driving part; a telescopic driving mechanism is arranged on the top of the base and connected to the cutting mechanism, the telescopic driving mechanism can drive the cutting mechanism to extend along the length direction of the cutting mechanism; a rotary driving mechanism is arranged on the bottom of the base, the rotary driving mechanism comprises a driving part arranged in the cavity, the rotary driving mechanism can drive the cutting mechanism to rotate around the axis of the length direction of the cutting mechanism through the cooperation of the driving part and the driven driving part, so that the cutting part cuts the soil along the plane perpendicular to the length direction. According to the device for cutting soil in-situ in a borehole provided by the application, the testing surface of the in-hole test can be a plane.

The invention relates to the technical field of superhard materials, and particularly discloses a polycrystalline diamond compact and a preparation method and application thereof.The preparation method of the polycrystalline diamond compact comprises the following steps that WC-Co alloy powder is sintered to obtain a hard alloy matrix; uniformly mixing nano diamond powder, micron diamond powder and cubic boron nitride, adding a reinforcing agent and a binding agent, and uniformly mixing to obtain a polycrystalline diamond layer mixture; the reinforcing agent is a nitrogen-boron doped graphene bonded amino carbon nanotube; a gradient transition layer raw material and a polycrystalline diamond mixture are uniformly spread on the surface of the hard alloy matrix in sequence, and then a composite blank is obtained through mold pressing; and sintering the composite blank to obtain the polycrystalline diamond compact. Graphene and carbon nanotubes are compounded to form a reinforcing agent with a three-dimensional network structure, so that the strength and wear resistance of the material are improved, and the service life of the material under harsh working conditions is prolonged.

The invention discloses a grouting construction method based on drilling, stirring and sprinkling irrigation integration, which comprises the following steps: step S1, drilling to a preset length A1 through a drilling tool provided with a multifunctional grouting drill rod, and stopping drilling when A1 is not more than the length of the multifunctional grouting drill rod; s2, while the multifunctional grouting drill rod keeps rotating, pulsating grouting is conducted on the hole section where the multifunctional grouting drill rod is located so that drilling, stirring and sprinkling irrigation can be integrally conducted, and grouting is stopped until the grouting standard is met; and S3, the step S1 and the step S2 are repeated in sequence, multi-section grouting is conducted till drilling and grouting reach the preset depth A, A is the designed grouting depth, and grouting construction is completed. According to the grouting construction method, grout is evenly diffused in the complex soft stratum, the grouting effect is good, drilling and grouting are integrated, and the construction efficiency is high.

The application discloses a through-layer drilling ring flow supply self-cleaning and blocking integrated hole bottom extraction non-jetting drill tool, which comprises a multifunctional rod body, an extraction inner group pipe, a radial cavity forming nozzle, an axial blocking nozzle, a conical hole screen plate strip, an air inlet transition piece, a cross-border air inlet pipe, a compression spring slide valve assembly and a ring flow opening and closing drill bit. The special slide valve control mechanism is adopted, the original radial cavity forming jet flow is reserved, and the instantaneous axial blocking jet flow is added, so that the conical hole screen plate strip is self-cleaned and blocked. The cross-border air inlet pipe and the transition air inlet piece are combined and sealed, so that the radial air inlet channel passes through the axial flow supply channel without air and water leakage. The ring flow supply anti-backflow opening and closing drill bit is designed, and the jet flow water medium pollution problem and the drill bit opening and closing problem are solved.