4845results about "Drilling machines and methods" patented technology

The invention provides a geological exploration drilling device and method for geotechnical engineering design, and relates to the technical field of geological sampling, the geological exploration drilling device comprises a vehicle body, a propelling mechanism, a drill rod and a drill bit, the drill rod comprises a plurality of sampling barrels and locking assemblies arranged between every two adjacent sampling barrels, the drill bit comprises a drill barrel arranged at the bottom of the drill rod, a spacer bush arranged in the drill barrel and a plurality of cutting plates arranged on the side wall of the spacer bush at equal intervals in a sliding mode, the knocking assembly is arranged on the support, and the knocking assembly can strike the exterior of the drill rod in the process that the propelling mechanism drives the drill rod to vertically move. A soil core pressed into the drill rod can be cut off from an external soil layer, the bottom of the drill rod is sealed, it is prevented that in the upward moving process of the drill rod, the soil core slides off to affect soil sample collection, the drill rod can be assembled according to needs so that the soil core can be conveniently divided into multiple small sections, the soil core in the drill rod can be stably taken out, and the working efficiency is improved. The soil core is prevented from being taken out from a relatively long drill rod and fractured and crushed to influence subsequent detection.

The present invention belongs to the technical field of anchor protection apparatuses. Provided is an automatic anchor protection platform having combined support of anchor rods and anchor cables. The automatic anchor protection platform comprises a movable chassis, a multi-cycle anchor rod drilling rig, an anchor rod drilling rig posture positioning control device, an anchor cable support device, a temporary support device, an electrical system and a hydraulic system. Said automatic anchor protection platform integrates the multi-circle anchor rod drilling rig, the anchor cable support device and the temporary support device, and therefore meets the anchoring and support requirements of roadways under different geological conditions, allows anchor rod and anchor cable parallel support operations to be conducted at the same time, and achieves efficient coordinating matching linkage integrated design, thus further promoting efficient operation processes in limited spaces such as coal mines and tunnels.

The invention provides an anchor rod with a barb structure and a construction method.The anchor rod comprises a hollow anchor rod body, a core rod arranged in the anchor rod body and a barb part arranged on the outer side of the anchor rod body, and the length direction of the core rod is the same as that of the anchor rod body; the multiple barb parts are arranged in the length direction of the anchor rod body at intervals, a plurality of barb pieces are arranged on each barb part at intervals, and the barb pieces are obliquely arranged on the anchor rod body. And barb pieces are arranged at the positions, corresponding to the barb parts, of the core rod. According to the anchor rod with the barb structure and the construction method, the core rod is arranged in the hollow anchor rod body, and the barb pieces and the barb pieces are matched to form a special composite stress form, so that the overall pulling resistance of the anchor rod is effectively improved, the construction cost is reduced, and the construction period is shortened; and as the designed length of the anchor rod is obviously shortened, disturbance to the surrounding environment is reduced, and pollution to the environment is reduced.

The present application relates to a pile driver and a pile driving method with less wear on drill rods, and relates to the technical field of building construction, and comprises a main frame, a winch is arranged on one side surface of the main frame, a steel cable is wound on the drum of the winch, a top frame is welded on the top of the drill rod bracket, one end of the steel cable extends upward through a pulley and is connected to a drive box through a lifting ring, a motor frame is arranged in the middle of the drive box, a drive motor is connected to the center of the motor frame through bolts, the bottom drive of the drive motor is connected to a reducer, and the bottom output end of the reducer is connected to a buffer mechanism through the drive box, and the buffer mechanism comprises a connecting tube, a rebound tube, a coupling joint, a strip groove, a slider, a damping rod, a support spring and an auxiliary spring; the present application significantly reduces the wear of the drill rod during the construction process by using a high-strength, wear-resistant alloy material to make the drill rod, performing special treatment, and arranging a buffer mechanism and a guide mechanism.

The present disclosure relates to the technical field of pile foundation construction, and provides a gantry-type piling machine and a cast-in-situ pile construction method. The gantry-type piling machine comprises a gantry, a pile frame platform, a moving assembly, and a lifting assembly. The gantry is vertically arranged on one side of the pile frame platform, and a power head is mounted on the gantry. A feeding position is provided on the pile frame platform, and the projection of a center shaft of the power head on the pile frame platform is located in an extension direction of the feeding position. The moving assembly is arranged on one side or two sides of the feeding position, a plurality of drill rods are horizontally distributed on the moving assembly, and each drill rod is perpendicular to the plane where the gantry is located. The moving assembly is used for conveying the plurality of drill rods to the feeding position in sequence. The lifting assembly comprises a pickup part, the pickup part is used for grabbing the drill rod, and the lifting assembly is used for driving the drill rod to be switched from a horizontal state to a vertical state and move to a position below the power head. According to the gantry-type piling machine, ordered rod connection can be realized by means of mutual cooperation of the moving assembly and the lifting assembly, and counterweighting can be performed on the piling machine by horizontally distributing the plurality of drill rods on the moving assembly so as to ensure the stability of the piling machine.

The invention relates to the field of sampling, in particular to a drilling and sampling device for road construction. The sampler comprises a frame and a sampling assembly arranged on the frame, the sampling assembly comprises a drilling cylinder and an inner cylinder, a plurality of drilling tools are hinged to the lower end of the drilling cylinder, the inner cylinder is coaxially inserted into the drilling cylinder, the inner cylinder is of a grating structure and comprises a first cylinder body and a second cylinder body, and a film is arranged in the inner cylinder. When a road surface part is drilled, the drilling tool is in a horizontal state, the contact area between the drilling tool and the road surface is large, large cutting supporting force can be kept, a drilling barrel is prevented from being stressed and deformed, when a roadbed part is drilled, the drilling tool is in an upright state, the contact area between the drilling tool and the roadbed is small, the cutting speed is increased, and the cutting efficiency is improved, so that different drilling requirements are met; meanwhile, when the roadbed part is cut, the inner cylinder is inserted into the roadbed in advance to support the roadbed, after drilling is finished, the thin film is pulled open to wrap the sample core, it is guaranteed that the distribution state of all layers of structures of the sample core is accurate, and the authenticity of the sample is guaranteed.

The invention discloses a portal type integrated operation workstation capable of adapting to different underground cavern sections. The portal type integrated operation workstation comprises a frame supporting system, an intelligent control room, a moving walking system, an electrical system and a functional arm system. The frame supporting system comprises first longitudinal beams which are arranged in a left-right spaced mode, and a plurality of transverse telescopic joints are installed between the left first longitudinal beam and the right first longitudinal beam. A plurality of longitudinal shrinkage joints are mounted at the lower end of each first longitudinal beam, the lower ends of the longitudinal shrinkage joints are connected with a high-strength supporting frame, and a movable walking system is mounted at the bottom of the high-strength supporting frame; the functional arm system comprises a concrete spraying-arch mounting arm, an anchor rod mounting arm and a drilling arm which are arranged in a layered mode from top to bottom. According to the portal type integrated operation workstation capable of adapting to different underground cavern sections, the functions of drilling, anchor rod construction, grouting, net hanging, arch frame installation, spraying and mixing and the like are integrated, and meanwhile the size of equipment can be freely adjusted so that the portal type integrated operation workstation can adapt to the extra-large sections of different sizes.

The invention relates to a coal seam extraction drilling air bag type memory metal net cover hole collapse prevention device and method, the device comprises an I-type air bag net cover installation unit body, a plurality of II-type air bag net cover installation unit bodies and an inflator pump, an exhaust pipeline is provided with an exhaust control valve, a hole wall is supported through a memory metal net cover, and the air bag net cover installation unit body and the inflator pump are arranged in the hole wall; the memory metal net sleeves can be matched with drill holes with different hole diameters in a self-adaptive mode and can be repeatedly used, the configuration number of the memory metal net sleeves can be greatly reduced, and therefore the processing cost of hole collapse prevention is further reduced; the installation of the memory metal net sleeve is directly controlled by the expansion of the air bag, so that the memory metal net sleeve can be quickly unfolded and reliably contacted with the hole wall; the removal of the memory metal net sleeve is directly controlled by temperature control gas, so that the memory metal net sleeve retracts to an initial state at the recovery temperature and is separated from the hole wall; the mounting and dismounting process of the memory metal net cover has the advantages of being simple, efficient and easy to operate, and the construction efficiency can be further improved.

The present disclosure provides a drilling tool and a method for full-length insertion of a fracturing casing into an underground directional borehole. The drilling tool comprises a reaming bit, a torque-transmitting casing, a torque-transmitting shaft, and a pilot bit; the reaming bit is provided with a first through hole; the torque-transmitting casing and the reaming bit are coaxially arranged, and the reaming bit is connected to one end of the torque-transmitting casing; the other end of the torque-transmitting casing is provided with a first connecting portion, the inner wall of the torque-transmitting casing is provided with a keyway and a separation guide groove, and the separation guide groove is communicated with the keyway; the torque-transmitting shaft passes through the first through hole and the torque-transmitting casing; the outer wall of the torque-transmitting shaft is provided with a torque-transmitting member, one end of the torque-transmitting shaft is provided with a second connecting portion, the pilot bit is connected to the other end of the torque-transmitting shaft, and the outer diameter of the pilot bit is less than the inner diameters of the first through hole and the torque-transmitting casing. The drilling tool of the present application allows large-bore fracturing casings to be inserted into directional boreholes, reducing the cost of fracturing engineering, and facilitating high-flow and high-pressure hydraulic fracturing operations.

A method for analyzing rock cores of a subterranean formation is disclosed. The method includes capturing core images of the rock cores that are collected from geographical locations in the subterranean formation, generating, by a computer processor and from the core images, sub-images by sub-dividing each of the core images, classifying, using a secondary machine learning model that automatically identifies artifacts induced from preparation of the rock cores, the sub-images into artifact-free sub-images and artifact-containing sub-images, and analyzing, using a primary machine learning model, the artifact-free sub-images to generate a core analysis result.

The invention discloses a construction method for controlling perpendicularity and deviation of a steel latticed column inserted in a cast-in-place pile, and relates to the field of engineering construction. Secondly, cast-in-place pile hole forming and reinforcement cage construction are conducted; 3, inserting construction of the profile steel latticed columns is conducted; fourthly, concrete pouring is conducted; and step 5, quality monitoring and deviation processing. A three-level measurement system is constructed, and the pile position deviation is smaller than or equal to 3 mm; the straightness of the standard jig frame prefabricated latticed column is smaller than or equal to L / 1000 and smaller than or equal to 10 mm, and the perpendicularity of formed holes is controlled to be smaller than or equal to 1% through a rotary drilling rig; a three-dimensional guiding system and dynamic monitoring are utilized, the insertion deviation plane is smaller than or equal to 20 mm (the insertion deviation plane is smaller than or equal to 10 mm in a reverse construction method), and the perpendicularity is smaller than or equal to L A guide pipe method is adopted for concrete pouring, and a composite anti-floating measure is combined to prevent deviation; quantitative monitoring and staged processing are carried out in the whole process, fine control of the whole process is achieved, and precision and safety are improved.

The invention relates to rotary drilling rig building pile foundation hole forming equipment and a construction method thereof, and relates to the technical field of rotary drilling rig equipment.The rotary drilling rig building pile foundation hole forming equipment comprises a vehicle body, a driving assembly is slidably connected to a suspension arm of the vehicle body in a limiting mode, a second winding assembly is arranged below the driving assembly, and an extension rod is arranged at the bottom end of the driving assembly; a transmission rod is arranged at the bottom end of the extension rod, a drill bit is fixedly connected to the bottom end of the transmission rod, the transmission rod is sleeved with an upper drilling cylinder, the upper drilling cylinder is provided with a limiting assembly, a lower drilling cylinder is sleeved with the lower portion of the interior of the upper drilling cylinder, and two racks are symmetrically and fixedly welded to the top end of the lower drilling cylinder. Two servo motors are fixedly arranged at the top end of the upper drilling barrel through bolts, the output ends of the two servo motors are each connected with a gear, and the arrangement of the structure can enlarge the soil storage space between the upper drilling barrel and the lower drilling barrel, so that the frequency of removing the upper drilling barrel and the lower drilling barrel out of a drilled hole for soil discharging is reduced; the construction efficiency of the whole device is improved.

The invention belongs to the technical field of coal mine safety, and relates to drilling construction equipment with drilling cooperating with reciprocating impact and a coal seam gas extraction method. The impact fracturing assembly comprises an impact drill bit, a reciprocating impact rod and a rotary transmission rod; the middle of the reciprocating impact rod is slidably sleeved with a first positioning block. The reciprocating impact rod is provided with a straight groove arranged in the axial direction, and the straight groove is matched with a linear protrusion in the first positioning block. A movable block is fixedly arranged at the other end of the reciprocating impact rod, one side of the movable block is attached to the inner wall of a groove in the end drill rod, and the other side of the movable block is attached to an annular double-arrow-shaped groove formed in the rotation transmission rod. The rotation transmission rod is axially limited through a second positioning block arranged on the rotation transmission rod in a sleeving mode. One end of the spiral drill rod is connected with the end drill rod, and a universal coupling is movably arranged in the spiral drill rod; the other end of the rotary transmission rod is connected with one end of a universal coupling, and one end of the universal coupling is detachably connected with a tail connector through the tail end of a spiral drill rod.

A foundation construction machine includes a self-moving assembly for moving the machine on the ground, an excavation tool, at least one actuator for moving the excavation tool, at least one electric motor for supplying power to at least one movement of the machine. At least one interchangeable electric storage system is configured to assume a working condition, in which the interchangeable electric storage system is mechanically and electrically connected to the machine, and a replacement condition, in which interchangeable electric storage system is at least mechanically disconnected from the machine. Handling equipment is for bringing the at least one interchangeable electric storage system from the working condition to the replacement condition.

The invention discloses an automatic drilling control method, system and equipment of a drilling machine and a storage medium, and belongs to the technical field of drilling machine control technologies. The automatic drilling control method of the drilling machine comprises the steps that if a drilling starting instruction is received, a power head is controlled to drive a drill bit to descend so that the drill bit can make contact with the ground; the power head is controlled to execute drilling operation; if the power head reaches the maximum stroke position and the drilling depth is smaller than the target depth, drilling operation is stopped, and the power head is controlled to be separated from the operation drill rod and ascends to the top of the mast; the manipulator is controlled to grab the alternative drill rods from the drill rod warehouse and move the alternative drill rods to preset positions; the power head is controlled to be connected with the tail of the alternative drill rod, and the power head is controlled to drive the alternative drill rod to descend and rotate; and after the head of the alternative drill rod is connected with the tail of the operation drill rod, the power head is continuously controlled to execute the drilling operation. Automatic drilling of the drilling machine can be achieved, and the operation efficiency is improved.

The invention discloses a shield pressure relief drill tool for a protruding coal seam and an out-of-hole closed slag discharge system. The drill tool is composed of a plurality of sieve hole drill rods, a transition drill rod and a plug-in drill bit. The sieve hole drill rod and the transition drill rod are composed of different special-shaped outer tubes, inner tubes and tapered hole strips. The axial space between the outer tube and the inner tube is a flow supply channel of the drill tool. The central hole of the inner tube is an internal slag discharge channel of the drill tool. The slag discharge sieve hole is arranged in an axial groove of the special-shaped outer tube and is connected with the internal slag discharge channel. The tapered hole strip is welded in the axial groove of the special-shaped outer tube and the tapered hole is coaxially aligned with the slag discharge sieve hole. Male buckles and female buckles are arranged at both ends of the sieve hole drill rod. A female buckle connected to the male buckle of the sieve hole drill rod is arranged at one end of the transition drill rod, and a plug-in interface connected to the plug-in drill bit is arranged at the other end of the transition drill rod. The out-of-hole closed slag discharge system comprises a sliding closed tube placed in the inner cavity of the out-of-hole sieve hole drill rod, a sealing hole pipe moving device installed at the hole mouth and a hollow slag discharge water (wind) tail connected to the tail of the drill rod.

The invention discloses a shallow hidden fire area radon gas in-situ tracing accurate identification and definition prevention and control system, belongs to the technical field of mine fire prevention and control, and aims to construct a dynamic monitoring, accurate delineation and targeted plugging multi-cooperation closed-loop governance chain and an in-situ radon detection and identification monitoring unit. Drilling, cup burying and sampling integrated operation is completed, and a radon gas concentration abnormal signal is monitored in real time; the radon measurement magnetic method fire area precise delineation unit is used for quantitatively delineating a fire source prevention and control area in a grading manner by fusing a radon gas magnetic field two-parameter ring type measurement network layout and combining an intersection and union set abnormal area division method and a comprehensive abnormal index threshold value method; according to the earth surface crack self-adaption blocking treatment unit, a dynamic shoveling solidified slurry precise blocking device is adopted, and efficient treatment of the shallow buried coal seam hidden fire area is achieved by separating an earth surface and an underground air leakage channel through bucket prepared soil screening and conveying, instant slurry preparation through a synthesis system, directional slurry spraying through a blocking mechanism and crawler belt ballasting dense blocking.

The invention discloses an intelligent impact rock drilling while-drilling lithology identification system and method, and belongs to the technical field of coal mining. The system comprises a front drill boom, an electrical unit, a hydraulic unit, an intelligent operation table, a data acquisition unit and a data processing unit, the electric unit and the hydraulic unit provide working power required by rock drilling construction; the intelligent operating platform controls the front drill boom to advance, swing and pitch; the data acquisition unit acquires propulsion pressure, impact pressure, rotation pressure, rotation speed and displacement signals in the construction process; the data processing unit stores and processes data; a reverse learning strategy and a self-adaptive t distribution strategy are used for improving a Tianying algorithm and optimizing and training a support vector machine model, then data collected by a data collection unit serve as input parameters, the optimized support vector machine model is input, an intensity prediction result is output, and real-time prediction of the tunnel face rock intensity in the drilling process is achieved.

The invention discloses a laser-assisted mechanical drilling rock breaking system which comprises a drill rod, a cooling channel distributed along the length of the drill rod is arranged in the drill rod, a laser emitting head is arranged at the position, corresponding to the cooling channel, of the top of the drill rod, and a mechanical drill bit is fixedly connected to the lower end of the drill rod. The laser emitting head emits laser beams in the drill rod in the direction towards the mechanical drill bit, a chip removal through hole is formed in the center of the mechanical drill bit, the chip removal through hole and a cooling channel in the drill rod are coaxially arranged, a plurality of laser spraying holes are evenly formed in the mechanical drill bit, and the laser emitting head is connected with a laser generator through a laser transmission pipe. The laser generator is electrically connected with a control terminal through a wire. The problem that in the prior art, single laser rock breaking cannot be coordinated with mechanical rock breaking equipment during rock breaking, so that the rock breaking efficiency is poor or the equipment is overheated is solved. The invention further discloses a rock breaking method of the mechanical drilling rock breaking system based on laser assistance.

The utility model belongs to the technical field of exploration drilling tools, in particular to a geological coring drilling tool capable of realizing continuous drilling along with a casing, which comprises a casing body, a drill rod sleeved in the casing body, a female joint fixedly connected to the bottom end of the drill rod, a male joint in threaded connection to the bottom end of the female joint, a reaming shell fixedly connected to the bottom end of the male joint, and a drilling rod connected with the reaming shell. A reaming drill bit is arranged on the surface of the reaming shell, an adjusting mechanism is arranged between one side of the reaming drill bit and the interior of the reaming shell, and fixing rods are fixedly connected to the two sides of the bottom of the reaming shell. The external expanding drilling diameter of the expanding drill bit can be adjusted, so that holes with different sizes can be drilled according to requirements, the drilling device is more flexible in use and very convenient and rapid to adjust, in addition, the pilot hole drill bit can be conveniently disassembled and assembled, and the drilling efficiency is improved. Therefore, the damaged collar hole drill bit can be independently detached to be replaced, operation is easy, and the maintenance cost is saved.

According to the soft low-permeability coal seam hole protecting and permeability increasing integrated pipeline and the using method, a plurality of drill hole protecting and permeability increasing structures are all located in the deep position of a drill hole, hole sealing treatment is conducted on an extraction pipeline, the passive hole protecting, collapse preventing and supporting effects can be achieved on a gas extraction drill hole, and at the moment, gas extraction work is directly conducted; after the flow of the extracted gas is continuously reduced, the drilling hole is sealed firstly, the interior of the drilling hole is pressurized through free desorption of the gas, then gas is injected into all the annular gas bags through the gas injection pipe, all the annular gas bags are expanded in sequence to extrude the positions with collapsed holes so that the positions can be pressed and expanded, and active hole protection work is achieved; and meanwhile, the annular air bag expands to compress the space in the drill hole, so that the air pressure in the drill hole is increased, then the annular air bag retracts when gas is exhausted, and the cycle is repeated, so that variable-frequency pneumatic shock waves can be formed in the gas extraction drill hole to crack a coal body, and the coal seam gas is displaced to be quickly desorbed into the drill hole after fracturing, so that efficient gas extraction is realized.

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 cast-in-place pile construction system and method in a soft foundation area. The system comprises a drilling system, a grouting system, a monitoring system and a control system, wherein the drilling system is used for drilling and monitoring and optimizing the drilling condition; the grouting system is used for grouting into the drill hole and optimizing grouting parameters; the monitoring system is used for monitoring conditions in the drill hole and slurry parameters of grouting; the control system is electrically connected with the drilling system, the grouting system and the monitoring system and used for controlling the drilling system to drill holes and the grouting system to grout and adjusting construction parameters of the drilling system and the grouting system according to information monitored by the monitoring system. According to the invention, the drilling system and the grouting system can perform monitoring and optimization, and meanwhile, the monitoring system performs real-time monitoring, so that the control device can conveniently adjust the drilling system and the grouting system, the construction quality of the cast-in-place pile is improved, the construction efficiency can be improved, and even if a problem encounters in the construction process, the problem can be timely monitored and optimized.

The invention relates to the technical field of underground water detection, in particular to an underground water pollutant detection device and a detection method. The structure layout is more reasonable, interference to a water sample of a water taking layer caused by falling of upper-layer soil is effectively prevented, and the underground water pollutant detection precision is improved; comprising a machine frame, a sliding base installed on the machine frame in an up-down sliding mode, a discharging barrel piece fixedly installed at the bottom of the sliding base, a wall protecting barrel detachably connected with the discharging barrel piece, a rotating shaft rotationally installed on the sliding base, and a rotating driver providing power for rotation of the rotating shaft. The water sample detection assembly is installed on the upper portion of the wall protecting cylinder, the isolation soil shoveling assembly is installed at the bottom of the rotating shaft, spiral conveying blades matched with the inner walls of the wall protecting cylinder and the discharging cylinder piece are arranged on the rotating shaft, and the water sample detection assembly is used for detecting an underground water sample; the isolation soil shoveling assembly comprises a piston matched with the inner wall of the wall protecting cylinder and the inner wall of the discharging cylinder part, and a plurality of penetrating openings evenly distributed in the circumferential direction are formed in the piston.

The invention relates to the technical field of rock drilling, in particular to a rotary guide biasing mechanism for measurement and control while drilling, which comprises a drill rod, a detachable drill bit is arranged at one end of the drill rod, a support sleeve rod coaxial with the drill rod is rotatably arranged on the drill rod, and a rotating wheel deflector is arranged on the support sleeve rod; when a drill bit needs to deflect towards one side, a driving rod on one side of the deflection direction of the drill bit drives a sliding block to move in a sliding hole through a telescopic rod, so that the sliding block moves towards the downhill end of an inclined section, and at the moment, the sliding block drives a roller to be away from the inner wall of a drilled hole; the driving rod on the other side of the deflection direction of the drill bit drives the sliding block to move in the sliding hole through the telescopic rod, so that the sliding block moves towards the upslope end of the inclined section, the sliding block drives the roller to abut against the inner wall of the drilled hole at the moment, the friction force on the side is increased, and the drill bit deflects towards the side with small friction force; accurate control over the deflection direction of the drill bit is achieved.

The invention discloses a hole expanding device for geological exploration, which comprises a rack, an assembled drill rod and a hole expanding assembly, and the rack further comprises a lifter, a base, a driving device and a driving motor A; the assembled drill rod is formed by assembling a plurality of same unit drill rods up and down according to the required drilling depth, and a rotating shaft capable of controlling the reaming assembly to be opened and closed is rotationally mounted in the center of the assembled drill rod; the reaming assembly further comprises a drill rod base, a drill bit, a reaming structure, a discharging channel and a cleaning channel. The device has the functions that the device is provided with the assembled drill rod, different drilling depths can be met, assembly and disassembly are convenient and fast, most of a reaming structure of the device is hidden in the drill rod base, soil and rock generated in the drilling and reaming process can be discharged through the discharging channel, the influence of the soil and rock falling from a hole is extremely small, and meanwhile the drilling efficiency is greatly improved. In addition, the device can wash mudstone through the cleaning channel on the drill rod seat, the service life of the device can be prolonged, and the replacement cost is reduced.

The invention relates to the technical field of drilling devices, and discloses a coal mine goaf working face drainage hole drilling device which comprises a base, and a plurality of supporting stand columns are fixedly arranged at the bottom of the base. When the device is used and used for drilling operation, the reaming function can be achieved through overturning of the drilling pieces, the supporting barrel can smoothly enter a hole, slurry, drilling slag and cooling water can be rapidly discharged through the flow guide grooves in the supporting barrel, and the situation that a drill bit is stuck due to too much drilling slag is avoided; according to the drilling tool, the phenomenon that the drilling tool and the supporting barrel are clamped in the drilling process can be avoided, in the drilling process, through the interaction of the clamping groove and the trapezoidal clamping block, the pointed-end inserting rod is inserted into the inner wall of the hole to fix the supporting barrel, the supporting barrel is left in the hole, the hole is effectively prevented from collapsing through supporting at different positions, and meanwhile the drilling tool is convenient to use. In the pulling-out process, friction between the drill rod and the supporting roller drives the cleaning roller brush to rotate, and the outer wall of the drill rod is cleaned.

The present invention relates to the technical field of rotary drilling rig equipment, and specifically to a rotary drilling rig for drilling holes for building pile foundations. A rotary drilling rig for drilling holes for building pile foundations comprises a drilling rig body, a boom, a transmission rod and a drill barrel. The drill barrel is detachably mounted on the transmission rod through a limit assembly. The limit assembly comprises a limit state and a free state. When in the limit state, the drill barrel and the transmission rod move synchronously. When in the free state, the drill barrel and the transmission rod can move relative to each other. The rotary drilling rig for drilling holes for building pile foundations provided by the present invention is used to solve the problem that the existing rotary drilling rigs are not easy to extract soil due to the deep excavation depth and the long boom.

The utility model discloses an underground drilling and caving device, which comprises a vertically arranged columnar main body seat and an expansion wing arranged on the columnar main body seat, the main body seat comprises a cylindrical body, the expansion wing comprises a telescopic rod vertically arranged in the body, the upper end of the telescopic rod is vertically and elastically connected with the body, and the lower end of the telescopic rod is connected with a push block; an installation opening is formed in the outer wall, corresponding to the push block, of the lower portion of the body, the expansion wing further comprises a blade wing hinged to the interior of the installation opening, and the blade wing is arranged to be capable of being unfolded outwards under the pushing effect of the push block. By means of the mechanical cave-making method, the cave-making strength can be enhanced, a coal wall can be effectively cut when the coal seam hardness is large, the size of a cave-expanding space can be fixed by stabilizing water pressure, the cave-expanding space can be quantized through the blade unfolding radius, the operation efficiency and accuracy are improved, the operation risk is reduced, and drilling and cave-expanding are stable and reliable; operation faults and safety risks are reduced, and safety and quality of gas drainage operation are improved.

The invention discloses a self-adaptive pre-pressure-relief danger relieving device for a deep mine. The self-adaptive pre-pressure-relief danger relieving device comprises a supporting assembly. The supporting assembly comprises two side supporting plates which are symmetrically arranged, a top supporting plate is installed on the tops of the side supporting plates through connecting plates, and a plurality of pressure relief buffering assemblies which are arranged at equal intervals are installed on the outer walls of the side supporting plates and the outer wall of the top supporting plate. A pressure relief channel is established through the drilling assembly, continuous and directional hydraulic pressure relief is achieved in combination with the jet flow pressure relief assembly, rock mass fractures are effectively expanded, in addition, high-energy shock waves can be rapidly released through the blasting pressure relief assembly, strong pressure relief is achieved, and the device is suitable for a high-stress area; the jet flow pressure relief assembly and the blasting pressure relief assembly are switched in the hollow anchor rod, and an external water supply system and a blasting control system are connected, so that a mine has high adaptive capacity and safety performance according to different pressure relief requirements.