53 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of the drill bit in the hole, and the hole wall is relatively compact and not easy to collapse after the drill bit is withdrawn.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 invention relates to a drilling device intended to be rigidly attached to a drilling jig of a structure to be drilled, the device comprising at least: • a body; • a drill spindle (13) having a longitudinal axis, wherein the drill spindle is capable of moving a cutting tool, and wherein the spindle is rotatably and translatably movable along the axis between a retracted position and a deployed position; • motor means comprising: - a feed motor (12) capable of translating the spindle; and - a rotation motor (11) capable of rotating the spindle; • immobilising means (18, 19) for immobilising the body with respect to the jig, wherein the immobilising means comprise at least one first immobilising element that is movable between: - an unlocked position, in which the body can be moved relative to the jig; and - a locked position, in which the body is immobilised with respect to the jig; • actuating means (20, 21, 24, 22, 14) for actuating the first immobilising element, wherein the actuating means are able to act on the first immobilising element in order to place it in either of its locked or unlocked positions; and wherein the actuating means comprise the feed motor or the rotation motor.

The present invention discloses a drilling device for producing two-hole flat flanges for exhaust pipes, relating to the technical field of flange production drilling. The device comprises a drilling machine, the drilling machine being equipped with a lifting drill rig, the drill rig being equipped with a two-axis adjustable double-hole drill, the drilling machine being fixedly connected to a conveyor frame, a sleeve being fixedly connected to the drill shaft unit of the two-axis adjustable double-hole drill, a mounting frame being slidably connected in the middle of the drilling machine, the mounting frame being fixedly connected to hydraulic rods symmetrically distributed along the mounting frame, the mounting frame being fixed to the drilling machine via screws, and a clamping block being fixedly connected to the movable end of the hydraulic rod. The present invention adopts an adjustable positioning frame and a linkage structure with the mounting frame. When replacing flanges of different sizes, only the drill shaft spacing and the clamping block position need to be adjusted to ensure that the flange is automatically aligned with the center of the drill shaft, thus avoiding the problem of offset drilling. The operation is simple and convenient.

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 deep ploughing, leveling and compacting working assembly, which belongs to the technical field of deep ploughing machines and comprises a frame-shaped fixing frame, a transfer case is fixedly connected onto the frame-shaped fixing frame, a plurality of transmission shafts are arranged in the transfer case and fixedly connected with a drill spindle, two spiral blades are arranged on the drill spindle, and the two spiral blades are arranged on the frame-shaped fixing frame. A plurality of sets of fixing bolt holes are formed in the spiral blade at equal intervals and used for being fixedly connected with the auxiliary blades. The end, away from the drill spindle, of the frame-shaped fixing frame is movably connected with a slicking assembly and fixedly connected with a compacting machine, and the compacting machine is arranged behind the slicking assembly. The fixing bolt holes are formed in the spiral blades to be fixedly connected with the auxiliary blades, so that the soil entering resistance of the spiral blades can be reduced; and a compacting machine is arranged behind the slicking assembly, so that the scarified and slicked soil can be compacted, pores in the surface of the soil body after deep ploughing are reduced, evaporation of water in the soil body is reduced, and loss of entropy of the soil body is reduced.

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.

Directional drilling device for installing underground cables or tubes, comprising a housing having a drill space extending between two openings in sides of the housing for accommodating a drill string through the two openings, and defining a longitudinal drill axis; and a drive mechanism arranged in the housing for engagement with the drill string configured to move the drill string in a drilling direction along the longitudinal drill axis and configured to selectively rotate the drill string about the longitudinal drill axis to perform directional drilling; wherein the drive mechanism comprises a first clamping device for clamping the drill string; wherein the drive mechanism further comprises a second clamping device for clamping the drill string; wherein the first clamping device and the second clamping device are each configured to be arranged in a clamping state, in which the drill string is clamped by the respective clamping device, and in a release state, in which the drill string is movable with respect to the respective clamping device, wherein the drive mechanism is configured to move the clamping devices back and forth along the longitudinal drill axis, and wherein the directional drilling device comprises a control device operatively connected to the drive mechanism and the clamping devices for alternating movement of the clamping devices and for switching the clamping devices between the clamping state and the release state to perform directional drilling.

The present invention relates to a drilling device intended to be secured to a drilling grid of a structure to be drilled, said device comprising at least: a body; a drilling spindle, of longitudinal axis X, capable of driving a cutting tool in movement, said spindle being movable, along said axis X, in rotation and in translation between a retracted position and a deployed position; motor 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 one first immobilizing element movable 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;means for actuating said first immobilizing element capable of acting on said first immobilizing element to place it in one or other of its locked and unlocked positions; said actuating means comprising said advance motor or said rotation motor.;

The invention relates to the field of tobacco planting, and discloses an intelligent fixed-distance punching device for tobacco planting, which comprises a power source, a holding shaft and a punching component, the power source is carried by a planter, the holding shaft is held by the planter, the interior of the holding shaft is hollow, and a connecting shaft is arranged in the holding shaft; the output end of the power source is in power connection with the input end of the connecting shaft through a flexible shaft, the punching component comprises a connecting support connected with the holding shaft and a drilling shaft slidably arranged on the connecting support in the vertical direction, a driving shaft is arranged on the connecting support, and the input end of the driving shaft is in power connection with the output end of the connecting shaft. The output end of the driving shaft is in power connection with the drilling shaft through a power transmission piece, a driving assembly is arranged between the driving shaft and the drilling shaft, when the driving shaft rotates, the driving assembly can drive the drilling shaft to move downwards, the rotating speed of the driving shaft is increased progressively, the downward moving distance of the drilling shaft is correspondingly increased progressively, and a drill bit is arranged at the bottom of the drilling shaft.

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 invention discloses a screw drill with a variable torque structure, and relates to the technical field of well drilling, the screw drill comprises a supporting plate, the bottom of the supporting plate is fixedly connected with a supporting mechanism, the top of the supporting plate is fixedly connected with a heat dissipation mechanism, one side of the heat dissipation mechanism is fixedly connected with a ground breaking mechanism, and the other side of the heat dissipation mechanism is fixedly connected with the ground breaking mechanism. Firstly, the whole device vibrates in the working process, a supporting plate vibrates, then a supporting rod is driven to move downwards in the vertical plane based on a compression spring and a sliding shaft, the compression spring is extruded, the influence generated by vibration is reduced, and then moving wheels at the bottom of a moving plate can drive the whole device to move. The air cylinder is started to drive the telescopic shaft to stretch out and draw back so as to drive the telescopic frame and the motor above the telescopic frame to move up and down, the drilling shaft can be further driven to move up and down, and deep soil breaking treatment is conducted on soil.

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 discloses a digging machine for ore mining, and relates to the technical field of mining decomposition, the digging machine comprises a connecting arm and a digging unit; the digging unit is arranged at the front end of the connecting arm, the digging unit comprises a drill bit, the drill bit is arranged on the side portion of the connecting arm, the top of the drill bit is in transmission connection with the driving unit through a drill shaft, and the digging device further comprises a protection unit which is arranged on the outer side of the drill shaft in a sleeving mode. Large-range collapse of the hole is avoided through supporting of the protection pipe barrel, the hole wall is compacted and reinforced to a certain degree through outward pushing movement of the multiple outward pushing faces arranged on the surface of the protection pipe barrel, the influence of collapse of the hole wall on drill bit construction is further avoided, the top face of the drill bit is impacted and vibrated, impacting and chiseling of the drill bit are more concentrated, and the drilling efficiency is improved. The drill bit is prevented from being stuck, the influence on the hole wall is reduced, longitudinal and transverse buffering arranged at the top of the drill bit ensures the movement stability of the drill bit in the hole, and after the drill bit is withdrawn, the hole wall is relatively compact and not prone to collapse.

Drill chuck (1) with a chuck body (2) having a receptacle (8) at its axially rearward end, with clamping jaws (4) adjustable relative to the chuck axis (3), and with a clamping sleeve (7) serving to adjust the clamping jaws (4), wherein an adapter body (9) can be inserted into the receptacle (8) and coupled in a torque-transmitting manner, said adapter body having an adapter receptacle (10) for detachable connection to the drill spindle of a drilling machine, characterized in that the adapter body (9) has at least one locking element (13) adjustable by means of an unlocking sleeve (12) in the wall (11) of the adapter receptacle (10), that a control cam (14) is formed on the inner circumference of the unlocking sleeve (12) for acting on the locking element (13) designed as a locking ball, that a return spring (15) axially acts on the unlocking sleeve (12), and that the return spring (15) when connected to the chuck body (2) connected adapter body (9) is supported on the clamping sleeve (7).

A drilling tool comprising two main cutting edges (2) at least partially having an arcuate travel and connected to each other by a transverse cutting edge (6); a drill rake face (4), a longitudinal drill axis (L) about which the drilling tool (1) can be rotated in a direction of rotation (R); a drill bit (3) located on the longitudinal drill axis (L); two flutes (5) extending along the longitudinal drill axis (L); a drill core (7) formed between the flutes (5), the drill core (7) forming a land (8) in the circumferential direction; a core foil (12) introduced into the drill rake face (4), an opening angle (alpha) of the flute (5) having been formed on the drill rake face (4) with respect to a front view of the drill rake face (4), the opening angle (alpha) being defined in the case of conical grinding of the drill rake face (4) between: an imaginary connection of the drill bit (3) to the cutting corner (9) of the main cutting edge (2), and an imaginary connection of the drill bit (3) to the cutting corner (9) of the main cutting edge (2); and an imaginary connection of the drill bit (3) to a relief angle (10) formed on the land (8) at the transition of the flank (11) to the flute (5); in the case of surface grinding of the drill rake face (4), it is defined between an imaginary connection of the drill bit (3) to the cutting corner (9) of the main cutting edge (2) and a radially outwardly extending section of the contour (14) of the core foil (12). The opening angle (alpha) is between 85 DEG and 95 DEG, and the drill core foil (12) has been introduced into the drill rake face (4), the core thin piece (12) is arranged in the drill bit (3) such that a normal distance (NA) of an inner point of the core thin piece (12) from an imaginary connection of the drill bit (3) to the cutting corner (9) is less than or equal to a normal distance (NU) of a transition point (U) between the main cutting edge (2) and the transverse cutting edge (6) adjoining the core thin piece (12) from an imaginary connection of the drill bit (3) to the cutting corner (9), the core thin portion (12) begins at the transition point (U) and adjoins the adjacent main cutting edge (2) in a non-kink manner.

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 utility model relates to the technical field of drilling equipment, in particular to shaft machining drilling equipment which comprises a U-shaped seat, a motor is installed at the rear end of the U-shaped seat, the output end of the motor penetrates through the U-shaped seat and is fixedly connected with a rotating roller, and a plurality of evenly-distributed V-shaped grooves are formed in the outer wall of the rotating roller. A first conveying plate and a second conveying plate which are distributed left and right and abut against the outer wall of the rotating roller are fixedly connected to the interior of the U-shaped base, a supporting base is fixedly connected to the rear end of the interior of the U-shaped base, a first electric push rod is installed on the upper end face of the supporting base, and a first drilling tool and a second drilling tool can be driven to rotate through two second motors correspondingly; the first drilling tool can conduct drilling operation on the longitudinal faces of the shafts, the second drilling tool can conduct drilling operation on the transverse faces of the shafts, after drilling is finished, the rotating roller continues to be rotated, the drilled shafts slide to the second conveying plate, continuous machining drilling can be conducted on the outer walls or the front end faces of the multiple shafts, and the machining efficiency is improved. And the use is convenient.