790 results about "Reamer" patented technology

The invention belongs to the technical field of coal seam pressure relief and permeability improvement, and relates to a core rod jacking type mechanical reaming device and method, and the device comprises a core rod jacking type reamer, a core rod drill rod, a combined type rotary water tail and a hydraulic propeller which are sequentially connected from head to tail. The core rod jacking type reamer adopts a core rod pushing linkage structure, and the opening or closing state of a tool arm is accurately controlled; the core rod drill rod provides core rod guiding conduction, and deep hole reaming is achieved. The composite rotary water tail is used for rotary dynamic sealing connection of the drill rod core rod and the hydraulic propeller; the hydraulic propeller is used for being connected with hydraulic power and providing hydraulic propelling power for the guide rod. According to the device, hydraulic pressure serves as power to achieve rapid unfolding and retracting of the reaming cutter, the reaming speed is increased, the gas extraction drilling and reaming requirements are met, stable operation can be achieved under the complex geological condition, and the high field popularization value is achieved.

The invention provides a reverse-circulation large-diameter binding type down-hole hammer reamer bit and a slag discharging method. The reverse-circulation large-diameter binding type down-hole hammer reamer bit specifically comprises a drill bit shroud, an air distribution chamber, a central pipe combination, a down-hole sub hammer and a slag suction opening, wherein the slag suction opening is formed in the bottom of a central pipe and used for sucking crushed rock slag into a drill rod through negative pressure so as to discharge the rock slag. For bedrock large-diameter water-containing stratum reaming drilling, the unique slag suction opening is formed in the bottom of the center pipe, tail gas of the down-the-hole hammer forms entrainment airflow to push liquid in a drill hole to return to the ground surface from the slag suction opening, and the stable continuous reverse circulation slag discharging effect is achieved by means of gas lift water level rising of tail gas pressure of the down-the-hole hammer; and the drilling efficiency of the large-diameter binding type down-the-hole hammer is improved, and the stable and continuous deslagging effect is extremely good in construction application.

The invention discloses a reamer electromechanical driving mechanism and method capable of detecting the position state of a blade, and relates to the technical field of tools of petroleum drilling engineering, the reamer electromechanical driving mechanism comprises a power assembly, a lead screw assembly, an ejector rod, a locking assembly, a rotation detector and a displacement detector which are mounted in a drill collar; the power assembly is connected with the lead screw assembly, the lead screw assembly is connected with the ejector rod, the ejector rod is connected with the reamer blade, the power assembly rotates and drives the ejector rod to move up and down through the lead screw assembly, and the ejector rod moves up and down to drive the reamer blade to be unfolded or folded. The locking assembly is assembled on the ejector rod, and after the reamer blade is unfolded in place, mechanical self-locking is conducted on the ejector rod. The rotation detector is assembled beside the lead screw assembly to detect rotation of the lead screw assembly, and the displacement detector is assembled beside the ejector rod to detect up-and-down movement of the ejector rod. The opening and closing state of the cutter wing is measured and uploaded through the rotating detector and the displacement detector, the cutter wing is expanded in place, the underground condition can be judged easily, and controllable multiple reaming is achieved.

The present invention discloses a method for processing deep and long precision step holes in an intermediate casing. Before the support plate is welded to the intermediate casing, a through hole is first processed on the insert, and then the insert is welded to the support plate. The support plate is then welded to the intermediate casing to complete the processing of each end face of the casing. Next, spiral milling is used to process the step hole with the smallest aperture, and then the remaining step holes are processed by spiral milling. The step holes with high positioning and precision requirements retain processing allowances, and finally a reamer is used to process the step holes with high positioning and precision requirements. The present invention solves the problem of iron chips wrapped around the tool, avoids tool breakage, and reduces processing costs. In addition, the present invention also improves the surface quality of the precision step holes and enhances processing efficiency.

The invention relates to the technical field of program control, in particular to a reamer machining path intelligent optimization method and system based on artificial intelligence, and the method comprises the following steps: collecting a reamer main shaft load torque and a Z-axis feed current in the process that a reamer cuts into a workpiece, and generating a reaming contact area resistance characterization quantity; and mapping the resistance characterization quantity of the reaming contact area to generate a hardness distribution characteristic value of the workpiece material. According to the method, differential operation is carried out on a generated nonlinear track, the acceleration change rate of the nonlinear track is extracted, the dynamic complexity of a motion state is quantitatively evaluated, the dynamic complexity is combined with a contour error predicted by AI, a dynamically weighted feed-forward compensation amount is formed, and when a motion instruction is complex and the system following capability faces challenges, the compensation effect is enhanced; according to the predictive compensation mechanism, active suppression can be carried out before the servo error actually occurs, and the contour tracking precision of a complex nonlinear instruction is improved.

The invention provides a reaming device for geological exploration, and mainly relates to the technical field of geological exploration equipment. A hole expanding device for geological exploration comprises a drill rod and a hole expanding drill bit integrally and fixedly installed at the lower end of the drill rod. A guide assembly is fixedly installed at the lower end of the reamer bit, an annular groove is formed in the middle of the drill rod, a sliding sleeve located in the annular groove is installed on the outer portion of the drill rod in a sliding fit mode, an arc-shaped limiting plate is installed on the outer portion of the sliding sleeve in a hinged mode, and the arc-shaped limiting plate keeps stretching through a self-adaptive spring supporting assembly. The reaming device has the beneficial effects that through mutual cooperation of the guide assembly and the self-adaptive spring supporting assembly, the stability of the drill rod is improved, the drill rod is prevented from deviating, the perpendicularity and precision of a drill hole are improved, and meanwhile the stability of the reaming device in the working process is enhanced.

The invention provides a hydraulic engineering desilting device convenient to clean, and relates to the technical field of hydraulic engineering desilting, the hydraulic engineering desilting device convenient to clean comprises a main supporting frame, a main slurry conveying pump, side reamer supports and a side connecting frame, the lower portion of the main supporting frame is fixedly connected with the main slurry conveying pump, and the side reamer supports are arranged on the two sides of the main supporting frame; the upper portion of the side reamer support is in axial sliding connection with the side connecting frame, the upper portion of the main supporting frame is rotationally connected with a lower connecting rotating frame in the circumferential direction, the main supporting frame is fixedly connected with an upper sliding groove disc above the lower connecting rotating frame, and outer arc-shaped sliding grooves are formed in the two sides of the upper sliding groove disc. The main supporting frame is rotationally connected with an upper connecting rotating frame in the circumferential direction above the upper sliding groove disc. The distance between the side reamer support and the main slurry conveying pump is changed, the situation that machine halt is caused due to the fact that stones are clamped between the main slurry conveying pump and the reamer rotating head is reduced, and the problem that due to the design of the fixed distance between the reamer and the suction opening, the stones with the large particle size are prone to being clamped between the reamer and the suction opening, and equipment overload machine halt is caused is solved.

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.

The invention relates to the field of reaming machines, and discloses an automobile safety belt bulb tube reaming tool which comprises a reaming table, a fixing seat is arranged in the middle of the upper face of the reaming table, a clamping structure is arranged on the fixing seat, a bulb tube is clamped and fixed on the reaming table through the clamping structure, and the reaming structure is moved to move back and forth. According to the ball tube reaming device, automatic reaming work is conducted on tube openings of ball tubes, the ball tubes can be automatically switched in the process that the movable reaming structure moves back and forth in a reciprocating mode in cooperation with a rotary switching structure, a lifting structure, a gear structure and a driving structure, reaming work of the tube openings in the two ends of the ball tubes is achieved while the positions of the ball tubes do not need to be adjusted again, and operation is more labor-saving and convenient. And meanwhile, by arranging the adjusting structure, the rotating angle can be flexibly adjusted according to the position of the port of the bulb tube, so that the position of the port of the bulb tube can be smoothly switched for reaming in the reaming process of the movable reaming structure, and the use is more flexible and convenient.

The invention relates to the technical field of metal cutting tools, in particular to a novel spiral groove hard alloy reaming tool and an efficient chip removal structure thereof.The novel spiral groove hard alloy reaming tool comprises a reamer and a main cutting edge arranged at the bottom of the reamer, a cutting set is arranged on the lower portion of the reamer and comprises a first chip removal groove and a second chip removal groove, and the first chip removal groove and the second chip removal groove are formed around the surface of the reamer; the size of the first chip groove is larger than that of the second chip groove. Wherein the edge is lower than the auxiliary cutting edge, and an inclined plane included angle alpha used for assisting chippings to slide into the second chip groove is formed between the auxiliary cutting edge and the edge; the auxiliary cutting edge is flush with the surface of the reamer and is flush with the two ends of the main cutting edge, through the design of the included angle alpha between the edge of the first chip discharging groove and the auxiliary cutting edge and the cooperation of the stepped structure that the edge is lower than the auxiliary cutting edge, the retention space of chips in a transition area is thoroughly eliminated, spiral scratches caused by chip scraping of a traditional cutter are avoided, and the service life of the reamer is prolonged. And a high-precision reference surface is provided for subsequent tapping.

A reamer includes a shank portion extending from a rear end and a cutting portion extending from the shank portion to a front end. The cutting portion includes a plurality of cutting teeth separated by gashes. Each cutting tooth having a cutting edge extending in a longitudinal direction from the front end to proximate the shank portion. The cutting portion includes a margin trailing each cutting edge and extends along each cutting edge to proximate the shank portion. Each cutting tooth also has a primary relief formed between the cutting edge and the front end and a secondary relief extending longitudinally between the margin of one cutting tooth to the cutting edge of an adjacent cutting tooth. A width, W, of each cutting tooth increases in a radially outward direction with respect to the central, longitudinal axis when viewed from the front end of the reamer.

The invention belongs to the technical field of underwater operation equipment, and particularly relates to an underwater unmanned aerial vehicle device for deep sea automatic mining and a using method thereof.The underwater unmanned aerial vehicle device comprises a guide pipe paddle body structure, a mineral exploration structure, a positioning navigation structure, a cutter suction pump body structure and a control module; the mineral exploration structure is provided with a mineral exploration end, the positioning navigation structure is provided with a mineral positioning end, the two ends of the cutter suction pump body structure are provided with a pump suction inlet end and a pump suction outlet end respectively, and the control input end of the control module is connected with the mineral exploration structure and the positioning navigation structure. The control output end is connected with the guide pipe paddle body structure, the ore breaking reamer structure and the cutter suction pump body structure. The problems that in the prior art, when a mining vehicle is used for deep-sea mine mining, adaptability is poor, maneuverability is low, pollution is large, and the automation degree is low, so that deep-sea mining difficulty is large, pollution is large, and cost is high are solved.

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 invention relates to the technical field of deep well drilling, in particular to a deep well drilling anti-jamming buffer device which comprises a first connecting piece, a threaded groove is formed in the upper portion in the first connecting piece, a first through hole is formed in the first connecting piece, and a limiting block is installed on the lower portion of the first connecting piece. The second connecting piece is connected to the lower portion of the first connecting piece in a sliding mode, a threaded groove is formed in the middle of the second connecting piece, the shielding piece is installed on the second connecting piece, and the disc spring is installed between the second connecting piece and the first connecting piece. Through the synergistic effect of the disc spring set and the damper, nonlinear absorption of axial impact energy is achieved, radial self-adaptive aligning of the ball assembly is matched, the multidirectional load of the drill rod in a complex stratum and the gap adjusting function of the inclined face of the shielding piece and the reamer are effectively balanced, mud pressure distribution can be dynamically optimized, and the drilling efficiency is improved. And through combination of reaming cutting and ball resistance reduction, an axial-radial composite jam releasing mechanism is formed, and the probability of jamming of the drill is remarkably reduced.

The invention relates to the field of airflow pipe chambering, and discloses an automobile airflow pipe chambering device which comprises a workbench and a support, a shaping structure is arranged on the left side of the upper surface of the workbench, a movable chambering structure is arranged on the right side of the upper surface of the workbench, and a movable clamping structure is arranged in the middle of the workbench. The transmission structure drives the movable reaming structure and the movable clamping structure to synchronously move in the opposite directions, when the movable reaming structure and the movable clamping structure move in the direction close to each other, the airflow pipe can be reamed, the heating structure is matched to heat the reaming position of the airflow pipe, the reaming speed is increased, and after reaming, the reaming efficiency is improved. The reaming position of the airflow pipe can be shaped through the shaping structure, the problem that the airflow pipe shrinks due to gradual cooling after being heated and reamed is solved, in the shaping process, the movable reaming structure and the movable clamping structure are reset, reaming work can be continuously conducted on the next airflow pipe, the working time is fully utilized, and the working efficiency is improved. And the working efficiency is improved.

The invention relates to the technical field of metal embedded sleeve positioning and cutting, in particular to metal embedded sleeve positioning and cutting equipment which is characterized in that a feeding mechanism is arranged on the front side of a machining frame, and a clamping mechanism and a drilling and cutting mechanism are arranged on the machining frame; by means of the clamping mechanism, a metal cylinder serving as a variable-diameter embedded sleeve machining raw material can be rapidly and stably clamped, and the clamped and fixed metal cylinder can be stably rotated and adjusted by 90 degrees; the clamping mechanism is matched with the drilling and cutting mechanism, drilling, cutting and chambering can be synchronously conducted on the two ends of a metal cylinder through relative feeding of chambering reamers of two sizes, and the chambering requirements of different reducing embedded sleeves can be met by replacing the chambering reamers of different sizes; by means of the feeding mechanism, stable fixed-point feeding and taking can be conducted on the metal cylinders, and synchronous discharging can be conducted on the variable-diameter cylinders subjected to broaching forming.

A reamer includes a shank portion extending from a rear end and a cutting portion extending from the shank portion to a front end. The cutting portion includes a plurality of cutting teeth separated by gashes. Each cutting tooth having a cutting edge extending in a longitudinal direction from the front end to proximate the shank portion. The cutting portion includes a margin trailing each cutting edge and extends along each cutting edge to proximate the shank portion. Each cutting tooth also has a primary relief formed between the cutting edge and the front end and a secondary relief extending longitudinally between the margin of one cutting tooth to the cutting edge of an adjacent cutting tooth. A width, W, of each cutting tooth increases in a radially outward direction with respect to the central, longitudinal axis when viewed from the front end of the reamer.

This invention relates to a reamer assembly (6) for enlarging a substantially horizontal pilot hole (14) in the ground to produce a bore hole (18), including a cutter (21) which is rotatable about an axis X-X. A gear box (20) is positioned on a first side of the cutter (21) for interacting with a drive shaft (33) which is rotated about the axis X-X by a drive apparatus (2) outside the pilot bore hole (14) and a body (15) positioned on a second side of the cutter (21) for transferring thrust from a thrust apparatus (4) outside of the enlarged bore hole (18) to the cutter (21).

The invention relates to a machining tool and a combined machining method for a radial eccentric stepped hole of an injector disc, and belongs to the field of eccentric stepped hole machining. The machining tool comprises a detachable guide drill, a detachable reamer, a detachable rose reamer and a detachable reamer. According to the structural characteristics of a cutter and a product, eccentric stepped hole machining is divided into four stage processes of drilling, broaching, chamfering and reaming, and drilling, broaching and chamfering, allowance removal and finishing machining are sequentially completed. And step-by-step machining of the eccentric chamfering stepped hole is achieved. The cutter material, the coating, the cutting edge angle and the cutter split structure are machined step by step, the service life of the cutter is prolonged, and the machining efficiency is improved by more than three times. The combined machining method is adopted, cutter deflection is effectively restrained, chamfering uniformity errors are reduced, aperture control is improved, the roughness of the inner surface of the hole is reduced, the machining efficiency of the injector disc is improved, and the combined machining method is suitable for efficient and precise machining of the spaceflight complex step eccentric hole.

A bone reamer includes a shaft having a first and a second end. The second end is configured to connect to a rotating power source. A head of the reamer includes a rear face connected to the first end of the shaft, a cutting face on an opposing side of the head relative to the rear face, and a perimeter portion having an inner perimeter diameter and an outer perimeter diameter. The outer perimeter diameter defines outer boundaries of the rear face and the cutting face. A blade member of the reamer is disposed upon the cutting face and extends at least across the inner perimeter diameter of the perimeter portion. A center drill bit is disposed on the cutting face. The drill bit and cutting blade are concentric about a center axis of the reamer.

The invention discloses a construction method of a vertical shaft hole-expanding heading machine, which is used for performing hole-expanding drilling on a receiving section rock mass above a lower adit, adjusting heading parameters of the vertical shaft hole-expanding heading machine in stages, standing the vertical shaft hole-expanding heading machine after changing steps, and monitoring thrust fluctuation and deformation conditions of the receiving section rock mass. Dynamically correcting the tunneling parameters, and re-entering the tunneling circulation of the corresponding stage; the slag slipping well and the lower adit cooperatively discharge slag; and synchronously supporting the excavated rock mass. The vertical shaft receiving section construction method is safe, efficient and suitable for complex geology, and the technical problems that when a vertical shaft reaming heading machine conducts construction under the working condition that the bottom of the receiving section is suspended, equipment is unstable, construction efficiency is low, and potential safety hazards exist due to the fact that rock mass is broken and heading parameters are improperly controlled are solved.

This application relates to the field of dredging equipment technology and discloses a dredger cutter head device for dredging underwater sediment-laden hard soil layers. The device includes a linkage sleeve, with a cutter head fixedly mounted at one end of the linkage sleeve. A mud inlet pipe is also mounted on the cutter head, located below the linkage sleeve. Four cutter motors are installed inside the linkage sleeve to drive the cutter head rotation. A gear transmission mechanism is also fixedly installed inside the linkage sleeve. This design with four cutter motors significantly increases the total driving power of the cutter head compared to existing equipment with only one motor, thereby improving cutting efficiency and effectively reducing and preventing phenomena such as "cutter rolling," "cutter running," and "cutter slippage" during the cutting process, achieving effective cutting capability for slab sand.

The application provides a novel reaming drill bit device and a reaming method thereof, which comprises a reaming drill bit and a drill rod connector, the reaming drill bit comprises a drill bit base, a hollow bolt, a limiting block, a spring, a sliding rod and a cutter, one end of the drill rod connector is connected with a drill rod, and the other end of the drill rod connector is connected with the drill bit base; symmetric sliding grooves are formed on both sides of a cutting seam of the drill bit base; the cutter is fixed in the sliding groove through a sliding rail, and is automatically opened by sliding down along the sliding groove under resistance to rotate and ream; the cutter pushes the sliding rod to slide down to compress the spring, the drill rod is withdrawn after reaming, the spring pushes the sliding rod to slide up to drive the cutter to slide up, and the cutter returns to the original position; the drill rod in the hole is completely withdrawn, and cylindrical reaming is formed; the application only needs to replace the drill bit after drilling a relatively short hole, realizes reaming while drilling, and forms the reaming structure at one time, so that the workload of replacing the reaming drill bit can be greatly reduced; and the rock breaking capacity is relatively high, and the application is suitable for a relatively wide range of rock layers.

The present invention provides a mixing device and a method for mixing high-specific surface area materials. The mixing device comprises a mixing unit and a grinding unit, wherein the material outlet of the mixing unit is connected to the material inlet of the grinding unit. The mixing unit comprises a mixing barrel, a scraper, a reamer, a spray device, and a shielding plate for barrel wall holes. The grinding unit comprises a grinding barrel, a grinding disc, a grinding disc fixing device, and a material receiving bin. The mixing device provided by the present invention significantly improves the mixing efficiency of high-specific surface area materials with other substances, while substantially maintaining the specific surface area of ​​the high-specific surface area material before and after mixing, thereby ensuring its performance.

The application discloses a pipeline worm cooperation type pipeline back dragging method, which comprises the following steps: a, construction of a guide hole, including a guide entry hole, a guide hole channel and a guide exit hole, and hole cleaning work; b, preparation of a back dragging pipeline on the ground, and preparation of a pipeline worm, connection of the pipeline worm and the back dragging pipeline through a buckle, connection of a reamer and a drill rod at the other end of the pipeline worm; the drill rod, the reamer, the pipeline worm and the back dragging pipeline enter the guide entry hole, and then the drill rod pulls the reamer, the pipeline worm and the back dragging pipeline to conduct pipeline back dragging in the guide hole channel. The pipeline worm cooperation type back dragging can reduce anticorrosive layer damage, ensure smooth pipeline entry into a hole, reduce construction risks such as drill tool fracture, and can play a lever role to avoid pipe clamping caused by a non-smooth hole curve, improve one-time back dragging success rate, indirectly protect an ecological environment, shorten a construction period and reduce engineering cost.

The utility model discloses an adjustable reamer bit, and relates to the technical field of drilling bits. The device comprises a sliding sleeve, a connecting column is slidably connected into the sliding sleeve, and one end of the connecting column penetrates through the bottom of the sliding sleeve and is fixedly connected with a drill bit. A disc is fixedly connected in the sliding sleeve and located above the connecting column, a gear is rotationally connected to the top of the disc through a rotating shaft, two sets of positioning plates are arranged on the circumferential side face of the sliding sleeve in a sliding and penetrating mode and distributed in a high-low staggered mode, and any set of positioning plates are symmetrically arranged relative to the gear. Tooth grooves meshed with the gear are evenly formed in the side, facing the gear, of the positioning plate. The drill bit is driven by the sliding connecting column to move downwards, and the inclination angles of the arc-shaped blades are adjusted and fixed at the same time under the cooperation of the arc-shaped blades, the connecting plate, the positioning plate, the gear and the limiting assembly, so that the reaming diameter is conveniently adjusted and fixed, and the drilling stability is improved.

The machine tool comprises a base, a main shaft, a cutter bar locking screw rod, the rigid reamer, a clamp, a tailstock and an air cylinder, a movable center is arranged at the end, close to the clamp, of the tailstock, and the end, away from the rigid reamer, of the cutter bar locking screw rod is connected with a driving mechanism through a transmission piece; the lower end of the clamp is connected with the base in a sliding mode, and a positioning hole is formed in the position, corresponding to a workpiece, of the clamp. According to the machine tool for machining the bimetal lining through the rigid reamer, in the machining process, the rigid reamer is connected with the main shaft through the cutter bar locking screw rod, so that the rigid reamer only rotates on the power source, a workpiece has radial micro-compensation floating in the axial movement process, good follow-up movement is kept, the movement inertia of the workpiece is relieved, and the machining precision of the bimetal lining is improved. And microscopic size change caused by radial movement of the relative rigid reamer is reduced.

The utility model discloses a guide drilling tool for horizontal directional drilling pipe laying construction, which comprises a drill rod, a probe chamber and a replaceable drilling tool which are connected in sequence, and during complex stratum construction, a guide drill bit at the front end of the probe chamber can be quickly replaced by a drill bit suitable for different geological conditions for drilling operation through a second connecting sleeve. Or the reamer is replaced for reverse reaming operation. According to the utility model, the drill bit is quickly and conveniently detached; besides, during reverse reaming operation, due to the fact that the probe chamber is reserved, when the drill bit or the reamer is clamped by debris such as broken stones and metal pieces in the ground layer, the accurate clamping position of the drill bit or the reamer can be obtained by means of a detection signal sent by the probe in the probe chamber, accurate basis is provided for troubleshooting treatment, and construction efficiency is improved.

The utility model relates to a seeding machine with soil splitting and pressing functions, which comprises a rack, a self-propelled pressing roller, a soil splitting pressing roller, a rotary tillage cutter shaft, a main gear box, a reamer shaft, a fertilizer box connected with a fertilizer discharging pipe, a seed box connected with a seed discharging pipe and a land wheel, the land wheel, the reamer shaft, the rotary tillage cutter shaft, the soil splitting press roller and the self-propelled press roller are rotatably supported on the rack in sequence from front to back according to the advancing direction of the seeder, the main gear box, the fertilizer box and the seed box are arranged on the rack, and the main gear box is in transmission connection with the rotary tillage cutter shaft; the first transmission pair is in transmission connection with the reamer shaft; the reverse transmission shaft and the second transmission pair are in transmission connection with the soil dividing and pressing roller, and the rotation direction of the soil dividing and pressing roller is opposite to that of the rotary tillage cutter shaft. The device has the beneficial effects that the problem of uneven depth caused by soil sinking after soil compaction and sowing is solved, and a good soil condition is created for sowing.

The present invention is a hydraulic control apparatus (10) that activates and deactivates a downhole tool, such as a reamer, at a desired downhole location in a borehole. The apparatus includes a piston (20), a housing (40), a coil spring (48), and a guide pin (80). The piston (20) has a cam portion (26) with a continuous slotted groove (62). There is a slide member (64) and a force member (66) within the slotted groove so that the piston moves longitudinally and rotationally within the housing according to the guide pin within the slotted groove. At the desired downhole location, drilling fluid pressure passes a pressure threshold to move a front outlet of the piston to an opened position past an end of the housing, while rotating the piston according to the slide member and force member in the slotted groove. The apparatus alternately extends and retracts the reamer by opening and closing the front outlet by hydraulic control.