37 results about "Drilled shaft" patented technology

The application discloses a boring machine for ore mining and relates to the technical field of ore mining decomposition. The boring machine comprises a connecting arm and a boring unit, the boring unit is arranged at the front end of the connecting arm, the boring unit comprises a drill bit, the drill bit is arranged at the side of the connecting arm, the top of the drill bit is in transmission connection with a driving unit through a drill shaft, and the boring machine further comprises a protection unit which is arranged on the outer side of the drill shaft. The support of the protection tube avoids large-scale collapse of the hole, the outward pushing movement of the multiple outward pushing surfaces arranged on the surface of the protection tube compacts and reinforces the hole wall to a certain extent, the influence of hole wall collapse on the construction of the drill bit is further avoided, the drill bit top surface is impacted and vibrated, the impact and chiseling of the drill bit are more concentrated, the drill bit is prevented from being stuck, the influence on the hole wall is reduced, the longitudinal and transverse buffers arranged at the top of the drill bit guarantee the stability of the movement of the drill bit in the hole, and the hole wall is relatively compact and not easy to collapse after the drill bit is withdrawn.

The utility model relates to the technical field of building construction, in particular to a high-pressure jet grouting pile machine mud prevention device which comprises a mud prevention part, the mud prevention part comprises a mud prevention barrel, a limiting piece and a cover plate, a channel is formed in one side of the mud prevention barrel, the limiting piece is annularly arranged in the mud prevention barrel in a surrounding mode, an opening is formed in the limiting piece, the opening and the channel are aligned, and the cover plate is arranged on the limiting piece. The lower end of the mud-proof barrel is connected with the ground, the cover plate is arranged at the upper end of the mud-proof barrel, a through hole is formed in the cover plate, and a drill spindle of the high-pressure jet grouting pile machine penetrates through the through hole and extends into the mud-proof barrel. According to the high-pressure jet grouting pile machine, the supporting plate abuts against the supporting frame, the supporting plate can reduce vibration of the high-pressure jet grouting pile machine in the working process, the stirring process is more stable, due to the fact that the surface of the limiting piece is obliquely arranged, cement soil can flow into the drainage groove along the shape of the limiting piece when splashed out, cement soil can be prevented from being splashed, and the service life of the cement soil is prolonged. And the cement soil can stably flow in the drainage groove.

The invention discloses a mechanical drilling drill point and drill spindle tracing method and system, and the method comprises the steps: generating a code related to the identity information of a stored drill point, and storing the code in a first database; the aluminum sheets are bound with the products, and the multiple sets of aluminum sheet-product incidence relations are stored in a second database; storing a plurality of groups of drill point-drill point position-drill spindle association relationships in a third database; storing a plurality of groups of drill shaft-aluminum sheet association relationships in a fourth database; collecting report information of the product processing equipment, and storing the report information to a fifth database; integrating data of the first database, the second database, the third database, the fourth database, the fifth database, a pre-constructed drill point static information base and a pre-constructed drill point dynamic processing information base, and constructing a tracing information base; and when the product is abnormal, tracing to the associated drill point, drill spindle and other products based on the data of the tracing information base. The reliability of mechanical drilling process control can be improved, and the problem that tracing is difficult after a product is abnormal is solved.

The utility model relates to a blast hole drilling device for an open-air stope, and belongs to the technical field of exploration equipment for the open-air stope. According to the technical scheme, the device comprises a working frame (1), a movable frame (2), a first drilling frame (3) and a second drilling frame (4), the movable frame (2) is connected to the working frame (1) through a driving screw rod (103) in an up-down moving mode, and the driving screw rod (103) is in driving connection with a driving motor (1031); the first drilling frame (3) and the second drilling frame (4) are respectively fixed on the movable frame (2), a first drilling shaft (301) is rotatably mounted on the first drilling frame (3), a second drilling shaft (401) is rotatably mounted on the second drilling frame (4), and the first drilling shaft (301) and the second drilling shaft (401) are respectively in driving connection with a drilling motor (201). The drill bit has the advantages that the drill bit can be conveniently and rapidly replaced, disassembled, assembled and maintained according to different geologies, and the working efficiency is improved.

The present application relates to the technical field of machining equipment, provide a kind of drilling mechanism and section bar drilling and milling equipment, drilling mechanism includes mounting seat, track plate, first drive component and three drilling components, the track plate is erected on the mounting seat, two vertical grooves and the horizontal groove between the two vertical grooves are opened in the track plate, the first drive component is installed on the mounting seat, the output end of the first drive component is connected with the drilling component transmission, the drilling head is movably provided on the drilling component, the connecting sleeve is sleeved on the drilling head, the adjusting piece is fixed on the connecting sleeve, the slide pin is detachably inserted on the adjusting piece, three slide pins are respectively slidably assembled in two vertical grooves and the horizontal groove.This application solves the problem of poor adaptability caused by fixed drilling shaft position, and has the advantages of compact structure, good processing adaptability and high processing effect.

The utility model discloses a fast adjustable shaft hole matching type rotating mechanism, and belongs to the technical field of magnetic drills. A fast adjustable shaft hole matching type rotating mechanism comprises a magnetic base and a drilling mechanism, the drilling mechanism is arranged at the top of the magnetic base, the drilling mechanism comprises a driving part, a drilling shaft and a height adjusting assembly, and a drill bit is arranged at the bottom end of the drilling shaft; an electromagnetic chuck is arranged at the bottom of the magnetic base, the height adjusting assembly is used for driving the driving part to move up and down, the height of the drill bit is adjusted, and then the drilling depth of the drill bit is controlled. The angle of the drill bit can be rapidly adjusted through hinged matching of the rotating plate and the hinged block in the rotating part and magnetic fixation of the electromagnet and the swing plate, the magnetic base does not need to be attracted again, the single-time angle adjusting time is greatly shortened compared with a traditional multi-time attraction positioning mode, and the angle adjusting efficiency is greatly improved. Therefore, the machining efficiency of inclined-surface and arc-shaped workpieces is obviously improved.

The present invention relates to a drilling device intended to be attached to a drilling grid of a structure to be drilled, said device comprising at least: a body; a drilling spindle, with longitudinal axis X, capable of driving a cutting tool, said spindle being movable, along said axis X, in rotation and translation between a retracted position and a deployed position; drive means comprising: a feed motor capable of driving said spindle in translation, and a rotation motor capable of driving said spindle in rotation; means for immobilizing said body relative to said grid comprising at least a first movable immobilizing element between: an unlocked position in which said body can be moved relative to said grid, and a locked position in which said body is immobilized relative to said grid;actuation means for said first immobilizing element capable of acting on said first immobilizing element to place it in one or the other of its locked and unlocked positions; said actuation means comprising said advance motor or said rotation motor.

The invention discloses a desert terrain self-adaptive spiral drilling and seedling planting all-in-one machine, and relates to the technical field of agricultural drilling and seedling planting, the desert terrain self-adaptive spiral drilling and seedling planting all-in-one machine comprises a bottom plate, a hollow rotating drum is rotatably inserted in the middle of the top surface, and a left first motor drives the hollow rotating drum through a first chain belt. A drill spindle is slidably inserted into the hollow drum, a spiral blade is fixedly arranged on the lower half section, and the screw pitch is gradually increased in arithmetic progression from top to bottom. Rectangular channel steel is fixed to the bottom plate, a lead screw is rotatably inserted into the bottom plate, a U-shaped plate driven by the lead screw is slidably arranged in the middle of the bottom plate, and the front face of the U-shaped plate is fixedly connected with an L-shaped plate. The right side of the bottom plate is provided with a control assembly for controlling the two motors to start and stop. Through structural adaptation, stable transmission and intelligent control, efficient drilling and seedling planting in the desert are achieved, efficiency is improved, safety is guaranteed, the desert environment is adapted, and desert greening is facilitated.

The invention discloses an intelligent detection method and device based on forestry soil nutrients, and relates to the technical field of soil detection, a soil detector and a vertical debugging mechanism are arranged on the rear side and the front side of the top of a carrier respectively, and a mounting frame is arranged on the front side of the vertical debugging mechanism; and the two sides of the inner cavity of the mounting frame are rotationally connected with the drilling barrel through bearings. According to the intelligent detection method and device based on the forestry soil nutrients, the automatic material picking and sampling mechanism, the crushing mechanism and the vibration screening mechanism are arranged among the carrier, the drilling barrel and the drilling shaft, so that when the drilling barrel, the drilling shaft and the auger blade are cooperatively used for sampling, the automatic material picking and sampling mechanism, the crushing mechanism and the vibration screening mechanism are cooperatively used for sampling; shallow soil easily containing gravel is automatically stripped, subsequent soil blocks are synchronously crushed and refined, the effect of conveniently preparing a solution is achieved, the refined soil is synchronously sieved, and it is avoided that a final sample contains large soil blocks.

The utility model discloses a synchronous double-spindle flange drilling machine, and relates to the technical field of drilling. The synchronous double-spindle flange drilling machine comprises a drilling machine body and a drilling assembly, a placement disc is arranged on the drilling machine body, the drilling assembly is located on the drilling machine body, the drilling assembly comprises a disc, a sliding block, a drilling spindle, a hinge rod, a U-shaped plate and an electric push rod, and the electric push rod is fixedly connected to the inner wall of one side of the drilling machine body; the free end of the electric push rod is fixedly connected with a U-shaped plate, and two sets of hinge rods are installed in the U-shaped plate in a hinged mode and are oppositely arranged. Compared with single-shaft drilling, double-shaft drilling can complete more holes at the same time, the machining time is shortened, the electric push rod drives the drilling shafts to move, the effect of adjusting the distance between the two sets of drilling shafts is achieved, flange drilling is more flexible, the hole distance can be conveniently adjusted according to requirements, and the machining efficiency is improved. And the use convenience of the device is further improved.

The utility model discloses a preparation device of a fatigue crack propagation sample, which relates to the technical field of drilling processing of metal samples and comprises a three-shaft rack, a loading platform and a loading frame are arranged on the three-shaft rack, a drilling frame is arranged at the bottom of the loading frame, symmetrical drilling shafts are arranged on the drilling frame, a drilling tool bit is mounted at the bottom end of each drilling shaft, and a drilling tool bit is mounted at the bottom end of each drilling shaft. The first driving motor drives the driving wheel to rotate, the driving wheel can drive the two driven wheels to synchronously rotate through the belt, then the three-shaft rack drives the drilling frame to vertically descend, the drilling tool bit at the bottom end of the drilling shaft can conduct double-hole synchronous drilling and tapping on samples, and the drilling tool bit can be used for drilling and tapping the samples with different hole pitches. The double-thread screw is driven by the second driving motor to rotate, so that the two adjusting sliding seats move towards each other or away from each other, the drilling tool bits on the drilling shafts are driven to automatically adjust the distance, by means of the structure, operation is easy and convenient, synchronous double-hole drilling and tapping are achieved, the sample preparation efficiency is improved, and the device is suitable for batch sample preparation.

This utility model discloses a blasting drilling device for tunnel blasting construction, belonging to the field of tunnel blasting construction technology. It includes a blasting drilling support assembly, with the blasting drilling assembly connected to a crossbeam via a sliding hoisting assembly. The blasting drilling assembly includes a drilling motor, a spiral drill shaft connected to the output shaft of the drilling motor, and a fixed outer sleeve fitted around the tail end of the drilling motor. A fixed inner sleeve is fixedly fitted around the tail end of the drilling motor, and a second silicone damping washer is fitted around the inner sleeve. A buffer base is welded to the tail end of the drilling motor through the fixed inner sleeve and the second silicone damping washer. Multiple air springs are connected between the outer wall of the buffer base and the inner wall of the fixed outer sleeve. A protective cover is fixedly fitted around the end of the drilling motor near the spiral drill shaft. This utility model improves the consistency and accuracy of drilling by eliminating the need for manual pressure application, reducing quality fluctuations caused by human factors.

The utility model relates to sludge sampling technical field, the utility model discloses a sludge sampling device. It contains the inside hollow, the storage mud spare of one side is equipped with the mud outlet and the mud switch, and the drainage tube is through the storage mud spare, and the end has the adjusting cover. The support support is composed of a plurality of support rods, is connected with the storage mud spare and fixes the drainage tube, and one end is equipped with the support plate with the support through -hole. The suction pump of intercommunication drainage tube is equipped on the support support. The rotary drill shaft has the drill bit, the rotary shaft and at least three telescopic rods, and the telescopic rod is connected with the support plate. The upper portion of storage mud spare is equipped with the power supply and control switch, and is electrically connected with each component. The sampling device of the application is remarkable. Adopting the electric or hydraulic telescopic rod, can flexibly control the rotary drill shaft position, and the storage, operation is simple. The drill bit can break up the big lump coagulation sludge, and the applicability is strong. After reaching the sampling depth, the telescopic rod cooperates with the suction pump, and the deep sludge is sucked into the storage mud spare. The suction pump and the adjusting cover are automatically controlled. The support support and the fixed ferrule of connection setting ensure that the device is stable.

The utility model discloses an efficient drilling tool for a rotary drilling rig, which comprises an outer barrel, a rotating disc is rotatably arranged on the upper portion of the outer barrel, and a connector used for being connected with a drill rod is arranged on the upper portion of the rotating disc. A main drill shaft is arranged in the middle of the lower portion of the rotating disc, a plurality of auxiliary drill shafts are evenly arranged in the circumferential direction at intervals with the main drill shaft as the center, and the circumferential wall of the main drill shaft and the circumferential wall of the auxiliary drill shafts are fixedly sleeved with spiral blades. The lower end of each spiral blade extends to the outer part of the lower end of the outer cylinder body and is provided with a plurality of rotary digging teeth; a limiting connecting ring is fixedly arranged on the inner circumferential wall of the upper end of the outer barrel, and a connecting ring groove is formed in the inner circumferential wall of the limiting connecting ring. Good guidance quality and hole forming quality of spiral drilling are guaranteed, slag discharging is convenient, the capacity and the soil carrying capacity of a drilling tool can be effectively improved, and therefore working efficiency is effectively improved.

The invention relates to a drill shaft 10 for an intramedullary reamer 1, the intramedullary reamer 1, a momentum-reducing coating 17, the use of said coating 17, and a method for reprocessing the intramedullary reamer 1. The drill shaft 10 includes an elongate shank 19. The shank 19 has a drill connection 13 at a first end 11 and a drive connection 14 at an opposing second end 12. The shank 19 has a shaft core 18 with a longitudinal, end-to-end bore 15. The shaft core 18 is manufactured from nitinol. A lateral surface 16 of the shaft core 18 has a momentum-reducing polyether ether ketone coating 17. The coating 17 extends from the first end 11 to the second end 12.

The utility model discloses a fixed-distance drilling device for handle processing, which comprises a rack, the middle part of the rack is in sliding connection with a moving seat capable of moving vertically, the front end of the moving seat is in sliding connection with two drilling shaft seats, the front side surfaces of the two drilling shaft seats are respectively provided with a main shaft motor, the fixed-distance drilling device also comprises a bidirectional screw rod, the bidirectional screw rod is in rotating connection with the front side of the moving seat, and the main shaft motors are arranged on the front side surfaces of the two drilling shaft seats. The two drill shaft seats are both in threaded connection with the bidirectional lead screw, a connecting strip is arranged on the upper surface of the drill shaft seat on the left side, a graduated scale is arranged on the upper surface of the connecting strip, a locking assembly is arranged on the upper surface of the drill shaft seat on the right side and used for controlling locking of the connecting strip and the movable seat, and two positioning pins capable of synchronously moving in the reverse direction are installed at the front end of the rack. According to the fixed-distance drilling device for handle machining, the two spindle motors can be adjusted through the two-way lead screw, the adjusting range is wide, the distance between two drilled holes can be known simply and clearly, locking is convenient, and use convenience is good.

The application discloses a drilling and grouting integrated hollow anchor rod device, which comprises a main seat body, a drilling assembly, a moving shaft, an anchor grouting assembly and an anchor rod assembly. The drilling assembly comprises a drilling shaft and a driving piece. The drilling shaft is provided with a first central hole. The driving piece is connected with the drilling shaft. The moving shaft is movably matched in the first central hole. The moving shaft is provided with a second central hole. The anchor grouting assembly is slidably arranged on the main seat body. The anchor grouting assembly is provided with a fluid channel which is communicated with the first central hole. The anchor rod assembly comprises a pre-tightening nut and a hollow anchor rod. The pre-tightening nut is matched on the hollow anchor rod. The pre-tightening nut is rotationally matched at the first end of the first central hole. The driving piece drives the drilling shaft to rotate, so that the drilling and pre-tightening operation of the anchor rod assembly is realized, the construction efficiency is improved, and the fluid channel is prevented from rotating relative to the surrounding environment during the operation, so that the fluid channel is suitable for conveying fluid media which is easy to react and volatilize and dissipate.

The utility model discloses a combined drill assembly which comprises a drill bit and a linkage mechanism. The linkage mechanism comprises an upper bottom plate, a lower bottom plate, a spline shaft, a gear and a drill spindle, the gear is mounted between the upper bottom plate and the lower bottom plate, the drill spindle is mounted on the upper bottom plate and meshed with the gear, the upper end of the drill spindle is connected with a drill bit, and the spline shaft is arranged below the lower bottom plate and connected with an external power source. When the spline shaft receives external power input, the gears synchronously drive the multiple drill shafts to rotate, and the multiple drill bits can machine hole sets at the same time. According to the utility model, the machining efficiency is improved, repeated positioning and movement are reduced, the machining precision is improved, and the specifications of the drill bit and the drill spindle can be adjusted as required to meet the machining requirements of different hole groups.

The application provides a deep foundation pit underground continuous wall pipe gushing repairing device and method, and belongs to the field of foundation pit construction. In the related art, a water-stopping steel plate is generally arranged on the wall and is poured with the wall body to form a whole, so that seepage repair is realized. However, with the accumulation of time, the risk of failure and recurrence is high. The device comprises a shell assembly, a drill bit assembly and a driving assembly. The drill bit assembly comprises a main drill bit and a self-advancing anchor drill bit. The driving assembly comprises a driving ring, a main drill shaft and an anchor drill shaft. The anchor drill shaft comprises a flexible shaft section and a guide section. The device is installed at a pre-drilled hole at a seepage position of the wall body. When the driving assembly works, the main drill bit is driven to continue drilling along the hole, and the multiple anchor drill bits are laterally drilled into the soil layer behind the wall. Then, cement slurry is injected to diffuse along the path of the drill bit, form a plugging slurry body, and the drill shaft remains in the slurry body as a bearing structure. In summary, the quality of the repair by using the device and the method is reliable, the durability is high, and the recurrence is not easy.

The invention discloses a slightly-weathered rock ground drilling and slag sucking device, and relates to the technical field of drilling equipment, the slightly-weathered rock ground drilling and slag sucking device comprises a drill bit, a drill shaft connected with the drill bit and a slag sucking assembly for sucking slag during drilling, and a plurality of slag guide grooves are formed in the edge of the upper end of the drill bit in the circumferential direction; the slag suction assembly comprises a pretreatment module and a slag suction module, wherein the pretreatment module is rotationally connected with the upper end of the drill bit; and the slag conveying module is fixedly connected with the upper end of the pretreatment module. The slag guide groove formed in the drill bit cooperates with the pretreatment module and the slag conveying module of the slag suction assembly to form a continuous and closed slag circulation channel, so that the slag can sequentially enter the pretreatment module and the slag conveying module from the drill bit through the slag guide groove and is finally discharged out of the hole. The pretreatment module is used for preliminarily guiding and crushing the residues, and the residue conveying module is used for further screening and buffering, so that the residues are smoothly conveyed, and blockage is effectively prevented.

A spindle for drilling heads has a substantially tubular or annular shape, with a clearance that is arranged so that it is coaxial with a drilling axis, and includes a gripping member or jaws configured to grip a drilling rod, and an actuator for selectively opening or closing the gripping member or jaws and rotating around the drilling axis integrally with the gripping member or jaws. The spindle also includes a revolving joint, through which the fluid that activates the actuator flows, and which is mounted on a free end of the spindle, on the end that is not directly constrained to the drilling head.

A tool insert (30) for core drilling configured to be connected to a power tool performing an operation by rotating the tool insert about an axis of rotation (24), the tool insert comprising a connection end (31) configured to be connected to a tool fitting of the power tool, a drill shaft (32) having a shaft diameter (dshaft), a plurality of drilling elements (33), which create during rotation about the axis of rotation (24) a borehole diameter (dB), and a guiding ring (34) having a ring diameter (d1), wherein the ring diameter (d1) of the guiding ring (34) is smaller than the borehole diameter (dB) and larger than the shaft diameter (dshaft) of the drill shaft (32).

A drilling tool includes a drive assembly with a shank that is configured to couple to a power tool and a step drill bit. The step drill bit includes a body having a proximal end adjacent the shank, a distal end opposite the proximal end, and a bit axis extending centrally through the body between the proximal end and the distal end. The body is defined by a wall extending around the bit axis to define a hollow interior cavity of the body. The step drill bit also includes a plurality of axially stacked, progressively sized steps with a first step at the proximal end and a terminal step at the distal end and a flute extending from the proximal end to the distal end. The flute defines a cutting edge.

This invention relates to a buried pipe construction device, comprising: a casing, a drilling mechanism, and a guiding mechanism; the casing has 2n buried pipe channels and at least one slurry channel within its wall; the top of each slurry channel is connected to a mud pump or a grouting pump; the drilling mechanism includes a drill bit and a drill shaft, the length of which is greater than the length of the casing; the drill bit contains multiple cutting teeth, and the tip circle of the drill bit is the same as the outer diameter of the casing; the guiding mechanism is located at one end of the buried pipe and is used to guide the buried pipe along one of the buried pipe channels into the hole drilled by the drilling mechanism after drilling is completed, and after reaching the bottom, return to the top of the casing along the corresponding other buried pipe channel. This invention integrates the three traditionally separate processes of drilling, pipe laying, and backfilling into a single construction process, which can significantly shorten the construction time of buried pipes, reduce construction difficulty, ensure the construction quality of buried pipe heat exchangers, and improve work efficiency.

A device(100) and method(4100) for autologous bone graft harvesting simultaneously cuts a cross-section of a bone(900) longitudinally with a longitudinal drill assembly(102), and transversely with a saw assembly(126) during a bone(900) drilling to obtain a bone block for repairing and rebuilding diseased bones. The longitudinal drill assembly(102) and the saw assembly(126) simultaneously cut a cross-section of a bone(900). The device(100) is hand-controllable, drill motor powered, and spring-tensioned to selectively cut internally to the captured bone for internal bone harvesting. The longitudinal drill assembly(102) includes a drill shaft(114) extending perpendicular from a drill plate(112), having a flat surface(204) with a depth gauge(116). A module assembly(118) includes a module plate(120) disposed above the drill plate(112). Pins(302a,302b) extend from the upper face(308a) of the module plate(120) to engage ends of slots(400a,400b) to restrict over-rotation of saw plate(128). The saws (136a,136b) move between an open position(700a) for stowage, and a closed position(700b) while sawing the bone(900).

The utility model provides an engineering driller clutch structure and relates to the technical field of clutches. Comprising a gearbox and a drill spindle arranged in the gearbox, and the drill spindle is rotatably installed in the gearbox through a bearing; the belleville spring deforms through tightening of the self-locking nut, elastic force is formed, and under the action of the friction pressing plate and the copper friction plate, the gear drives the drilling shaft to rotate under transmission of the gearbox due to friction force, and drilling operation is conducted. When an overload phenomenon occurs and the rotating torque is greater than the friction torque, the gear and the drill shaft rotate relatively, overload kinetic energy is released, the motor is protected, and the motor is prevented from being damaged due to overload.

The utility model discloses a numerical control lathe knife tower convenient to lock or separate, including base shell, the bottom fixedly connected with the positioning base plate of base shell, the bottom of positioning base plate is equipped with the mounting slide, the top rotationally connected with the main shaft of base shell, the one end of main shaft is installed the knife tower seat, knife, the top of base shell is equipped with the adjusting motor, the top of base shell one side is equipped with the machine box, the inside installation of machine box has the drilling motor, the output of drilling motor is connected with the pivot, the one end of pivot is connected with first bevel gear, the one end of drill axle is connected with the rotary seat, the one end of rotary seat is installed second bevel gear, the corner of base shell top all fixedly connected with the limit plate, the one side screw thread connection of limit plate has the locking bolt, the corner of positioning base plate is equipped with the positioning screw hole corresponding with locking bolt, the utility model discloses a numerical control lathe knife tower convenient to lock or separate, and the whole numerical control lathe knife tower is convenient to dismount and install, and the working efficiency is improved.

A drill bit (10) that includes: a shaft (12) extending along a drill axis (14); a transition section (16) which is connected to the shaft (12); a body section (18) having a front end (21) and comprising a plurality of axially superimposed, progressively increasing steps (20A-20M) including a first step (20A) at the front end and a last step (20M) connected to the transition section (16), wherein the first stage (20A) has two tip clamping grooves (42) which are each arranged at an angle of the tip clamping groove (44, 50) to the drill axis (14), the body section (18) further having two body clamping grooves (46) which each extend from the first stage (20A) to the transition section (16) and are arranged at an angle of the body clamping groove (48) which differs from the angle of the tip clamping groove (50); and a drill tip (21) located at the front end (21) of the body section (18) and having a cutting edge (28) that crosses the drill axis (14), wherein a first cutting surface (24) is located on one side of the cutting edge (28) and a second cutting surface (26) is located on an opposite side of the cutting edge (28), wherein the first cutting surface (24) has a first clearance angle (36) and the second cutting surface (26) has a second clearance angle (38) which differs from the first clearance angle (36); wherein each tip-chipping groove (42) extends to the first cutting surface (24) or the second cutting surface (26) to define at least part of an edge (32) of the first cutting surface (25) or the second cutting surface (26); wherein the angle of the body clamping groove (48) of each body clamping groove (46) is formed as a compound angle defined by a first angle of the body clamping groove (48) and a second angle of the body clamping groove (72), wherein the first angle of the body clamping groove (48) is measured between a center line (72) of each body clamping groove (46) and the drill axis (14) in a first plane, and the second angle of the body clamping groove (72) is measured between the center line (71) of each body clamping groove (46) and the drill axis (14) in a second plane which is orthogonal to the first plane; wherein the first angle of the body span groove (48) is between about 4.5 degrees and about 5.5 degrees, and wherein the second angle of the body span groove (72) is between about 1 degree and about 3 degrees.

The application provides a multi-point curve variable speed type steam nozzle head punching device, which is mainly composed of a fixing frame, a clamp, steam nozzle heads, a supporting shaft, a motor assembly, a drill bit, a handle and a positioning cantilever; the clamp and the supporting shaft are fixedly connected to the fixing frame, and the steam nozzle heads are arranged in the clamp; the motor assembly is sleeved on the top of the supporting shaft, and the motor assembly is provided with a shaft coupling assembly and a driving drill shaft; the supporting shaft is provided with three-point punching assembly, four-point punching assembly, a first positioning sleeve, a second positioning sleeve and a movable sleeve; the first positioning sleeve, the movable sleeve, the second positioning sleeve, the four-point punching assembly and the three-point punching assembly are arranged from top to bottom in sequence; and the movable sleeve is provided with a variable speed disc body fixedly connected thereto. The application can satisfy the processing modes of 3-hole type and 4-hole type, and the angles of the holes can satisfy the two modes of centralized arrangement and outward expansion arrangement.

An ultrasonic penetrometer may include an enclosure, an ultrasonic sensor, and a rod. The enclosure may include a channel having a first end and a second end. The ultrasonic sensor may be provided at the first end of the channel and may be configured to generate an ultrasound signal through the second end of the channel. An output from the ultrasound sensor may be used to determine a thickness or stiffness of sediment The rod may have a proximal end facing the ultrasonic sensor and a distal end opposite the proximal end. The rod may be configured to move relative to the enclosure. The distal end may be configured to contact the sediment. The enclosure may be configured to be fluid-tight relative to an exterior of the enclosure such that the generated ultrasound signal travels in a single medium.